The small regions inside ferromagnetic materials in which the magnetic moments of all the atoms are perfectly aligned are called domain
A magnetic domain is a region in which the magnetization is in a same direction or it can be said that , domain is that region in which the individual magnetic moments of the atoms are aligned with one another and point in the same direction. The alignment of magnetic moment in same direction constitutes a domain
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What happens to form the brown spots on a tlc plate when you place the developed tlc plate in an iodine chamber?.
Iodine sublimates and reacts with the compounds on the produced TLC plate when it is placed in the chamber and covered, producing yellow-brown spots.
Iodine interacts with many different chemical molecules to produce colorful complexes, which causes coloration. About half of the possible chemicals will work with this stain. For every step see attached file.
Because complexation is reversible and the original chemical will eventually remain on the TLC plate when the iodine has evaporated, this procedure is regarded as "semi-destructive." It is potentially feasible to utilize a different visualization method on the TLC plate after the coloring fades, though it's likely the compound may already have evaporated by then.
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To serve a single load that will not operate more than 3 hours, 1 awg conductors are installed. These branch circuit conductors can be protected by a circuit breaker with a rating no greater than ___ amps.
The correct answer of branch circuit conductors can be protected by a circuit breaker with a rating no greater than should be 125 amps.
What Size Wire Do We Need for My Breaker?
The accepted system for this measurement is AWG. A smaller wire size is indicated by a greater number in the wire gauge scale, which runs from high to low.
The circuit conductors between the outlet and the final overcurrent device protecting the circuit are referred to as branch circuits (s).
The circuit conductors between the outlet and the final overcurrent device protecting the circuit are referred to as branch circuits (s). If the conductors are on the load side of the final branch circuit overcurrent device, even conductors for a circuit rated at 1000 amps are a branch circuit.
The branch-circuit conductors that supply loads other than those listed in 210.3 and other than the cooking appliances covered by 210.19 must have an ampacity sufficient for the loads served and must not be lower than 14 AWG.
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if a 69.87 kg person ate 181 calories worth of sugar (about the calories in a typical energy drink and they converted all of that energy to heat immediately, what would be the change in temperature of that person?
If a 69.87 kg person ate 181 calories worth of sugar and they converted all of that energy to heat immediately, the change in temperature of that person is 3.609 ºC.
What is calorie?
Energy is quantified by calories. One calorie is equal to the amount of a heat energy needed to raise one gram of water's temperature by one degree Celsius.In reality, the term "calorie" refers to a kilocalorie, or one thousand actual calories.To heat one kilogram of water by one degree Celsius, one nutritional calorie is required.Through combustion in a bomb calorimeter, the number of calories in various food servings is calculated.To calculate the change in temperature resulted from the intake of food calories or energy generated in Joules we use the formula,
Energy(Joules) = mass of the body (g) x specific heat of the body(J/gºC.) x change in temperature (ºC)
Let us assume that the average specific heat of the person's body is 3.00 J/gºC.
Using the above formula we find the change in temperature as-
181 x 1000 cal/ 1cal x 4.18 J/1 cal = 69.87 x 1000 x 3.00 J/gºC. x ΔT
ΔT = 181 x 1000 x 4.18/ 69.87 x 1000 x 3
= 3.609
Hence, the change in temperature of that person is 3.609 ºC.
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A 20 gram bullet traveling at 250m/s strikes a block of wood that weighs 2kg. With what velocity will the block and bullet move after the collision?.
The conservation of momentum can be used to determine the final velocity. The block and bullet system's velocity after the collision will be 2.5 m/s.
For example, a circular path's direction is always perpendicular to a line from the point to the circle's center. A point always moves in a direction that is tangent to its path (a radius). Using the momentum principle,
Where,
= bullet weight, 20 g, or 0.2 kilogram
250 m/s is the bullet's speed before colliding.
= block weight = 2 kg
= velocity following impact =?
Fill out the formula with the values,
Therefore, the block and bullet system's velocity following the collision will be 2.5 m/s.
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How did you find the speed of the ball at the bottom of the ramp?
The speed of the ball at the bottom of the ramp is obtained by taking the square root of 2 times gravity times height of the ramp (v = √2gh).
What is the speed of the ball at the bottom of the ramp?The speed of the ball at the bottom of the ramp is calculated by applying the principle of conservation of energy as shown below.
According to principle of conservation of energy;
kinetic energy of the ball at bottom of the ramp = potential energy of the ball at the maximum height of the ramp
K.E(bottom) = P.E(top)
¹/₂mv² = mgh
v² = 2gh
v = √2gh
where;
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Why does a shaved camel standing in the sun require more water than an unshorn camel?.
The shaved camel has more evaporation than unshorn camel so it needs more water.
In order to lower the bog, the sweat, or more specifically its evaporation, cools the air around the body.
why does camels produce little sweat and urine?
A camel can easily withstand extreme temperatures.
Most of a camel's fat is deposited in its humps, unlike many other mammals, allowing for improved thermoregulatory. It is easier for them to release heat from their bodies in warmer climates. Camels seldom ever perspire. They are far better able to withstand the heat than we are.
During the day, their body temperature fluctuates, rising with the greater outside warmth and falling at midnight when it is colder. Although it may seem odd that camels have fur when they live in such desert areas, their hairs really act as insulation to keep them cool.
Therefore, The shaved camel has more evaporation than unshorn camel so it needs more water.
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The shaved camel has more evaporation than unshorn camel so it needs more water. In order to lower the bog, the sweat, or more specifically its evaporation, cools the air around the body.
Why does camels produce little sweat and urine?
A camel can easily withstand extreme temperatures. Most of a camel's fat is deposited in its humps, unlike many other mammals, allowing for improved thermoregulatory. It is easier for them to release heat from their bodies in warmer climates. Camels seldom ever perspire. They are far better able to withstand the heat than we are.
During the day, their body temperature fluctuates, rising with the greater outside warmth and falling at midnight when it is colder. Although it may seem odd that camels have fur when they live in such desert areas, their hairs really act as insulation to keep them cool.
Therefore, the shaved camel has more evaporation than unshorn camel so it needs more water.
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There are nine books in a stack, each with a weight of 6n. The coefficient of friction between all the books is 0. 1 as is the coefficient between the table and the bottom book. What horizontal push must i just exceed on the next to bottom book to start sliding the top eight books off the bottom one?.
The top five books must be pushed off the bottom one with 5 N of horizontal force.
The word "force" has a specific meaning in science. At this level, calling a force a push or a pull is entirely appropriate. A force is not something an object "has in it" or that it "contains." One thing experiences a force from another. Each of the six books weighs five pounds, therefore we need to slide five of them.
them, where 55 = 25N
The following formula can then be used to get the friction force.
F = N μ
where F is the frictional force, N is the force, and is the static friction coefficient
F= (25 N) (0.2) (0.2)
F= 5 N
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what is the force of gravity between samantha and the earth? samantha's mass: 55.80 kg, earths mass: 6.0 x 1024 kg, radius of earth: 6.4 x 106 m
The gravitational pull of the earth on Samantha is 3.6 x 1022, which is the force that pulls objects toward the center of a planet or other body.
What does the term "human gravity" mean?Gravity is the downward force or pull that the earth exerts on your body. Your body's mass was concentrated at the point where your center of mass is located. Gravity center The center of gravity of the human body is a notional position where the gravitational force is also said to appear to act (COG).
What is the origin of gravity?Every physical thing in the universe is impacted by the gravitational force, also known as gravity. Any two non-zero mass objects or particles will gravitationally tend to gravitate toward one another. Gravity has an impact on everything, from atomic particles to galaxy clusters.
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at one instant, the two conductors in a long household extension cord carry equal 5.00-a currents in opposite directions. the two wires are 3.00 mm apart. find the magnetic field 35.0 cm away from the middle of the straight cord, in the plane of the two wires.
The magnetic field 35.0 cm away from the middle of the straight cord, in the plane of the two wires is 1.96 T j
What is meant by magnetic field?A magnetic field is a vector field that explains the magnetic influence on moving electric charges, electric currents, and magnetic materials. A moving charge in a magnetic field experiences a force that is perpendicular to both its own velocity and the magnetic field.
The magnetic field is a technique used to describe how magnetic force is distributed in the space surrounding and within something magnetic in nature.
Given,
A long household extension cord's two conductors carry equal 5.00-a currents in opposite directions at the same time.
And also given that the two wires are 3.00 mm apart.
Let B₁ be inside the plane and B₂ be outside the plane.
It is required to calculate the magnetic field at point A
The directions of the magnetic field at A can be calculated using Right hand rule.
[tex]B_{net}[/tex] = B₂ -B₁
[tex]B_{net}[/tex]=μ₀I/2Π(0.35-(3×10⁻³)/5) - μ₀I/2Π(0.35+(3×10⁻³)/5)
[tex]B_{net}[/tex]= 1.96×10⁻⁹ TJ
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an object is rolling without slipping. what percentage of its total kinetic energy is its translational kinetic energy if the object is (a) a uniform sphere, (b) a uniform cylinder, or (c) a hoop?
When the object is a sphere of Radius R and mass M the 60% of its total kinetic energy is its translational kinetic energy.
What is a kinetic energy?
The kinetic energy of an object is termed as the energy it posses because of its motion.
What is translational kinetic energy?The translational kinetic energy is the energy required to move or accelerate the object from its position of rest.It is described as the effort required to move a mass-determined body from rest to the indicated velocity.
The moment of inertia of the object will be⇒I =2/3MR2
Sphere is rolling without slip ,v=Rω (v= speed of centre of mass and ω is angular speed)
Translational KE =1/2Mv2
Rotational KE = 1/2Iω2=1/2(2/3MR2)x(V/R)2=1/3Mv2
Total KE= 1/2Mv2 +1/3Mv2 =5/6 Mv2
Now % of Translational Energy= 1/2Mv2 ÷ 5/6 Mv2 x100 = 60%
Hence, when the object is a sphere of Radius R and mass M the 60% of its total kinetic energy is its translational kinetic energy.
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what is the microscopic term for when a slide should be in focus at a higher magnification once you have proeprly focused
When a slide needs to be in focus at a greater magnification after being properly focused, it is known as a compound microscope in microscopy.
How does a compound microscope work?Compound microscope definition. A high-resolution microscope with two sets of lenses produces a two-dimensional image of a sample. When more than a lens is used in the microscope, it is referred to as a compound lens. Additionally, one of the varieties of optical microscopes is the compound microscope.
What are the functions of compound microscopes?Compound microscopes are used to look at tiny samples that are invisible to the. These samples are frequently put on slides for viewing under a microscope. When utilizing a stereo microscope, slides are not required because there is more room under the lens for larger objects like rocks or flowers.
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What is injection molding process?
Injection molding is a method to obtain molded products by injecting the plastic material molten by heat into a mold, and then cooling and solidifying these products. The method is suitable for the mass production of products with different and complicated shapes, and takes a large part in the area of plastic processing.
There are four stages in the cycle. These stages are the clamping, injection, cooling and ejection.
For example, there are several products and industries where injection molding is used, like in producing toys, bottle caps, surgical devices, jewel boxes, and even automotive components.
Separate materials can be combined in one part in a type of injection moulding defined as a two-shot mould. This technique can be used to add a soft touch to proper plastic products, add colours to a part or produce items with different performance levels.
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Injection moulding is a method to obtain moulded products by injecting the plastic material molten by heat into a mould, and then cooling and solidifying these products.
Define injection molding?
Injection moulding is a manufacturing process that involves injecting molten material into a mould. Injection moulding can be done with a variety of materials, the most frequent of which being metals (for which the technique is known as die-casting), glassware, elastomers, confections, and, most typically, thermoplastic and thermosetting polymers. The part material is supplied into a heated barrel, mixed (using a helical screw), and injected into a mould cavity, where it cools and hardens to the cavity's configuration. After a product is designed, a mould-maker (or toolmaker) creates moulds from metal that are precision-machined to form the intended part's features. Injection moulding is commonly utilised for producing a wide range of parts, from small components to whole automotive body panels.
Injection moulding is a method to obtain moulded products by injecting the plastic material molten by heat into a mould, and then cooling and solidifying these products. There are four stages in the cycle. These stages are the clamping, injection, cooling and ejection.
For example, there are several products and industries where injection moulding is used, like in producing toys, bottle caps, surgical devices, jewel boxes, and even automotive components.
Separate materials can be combined in one part in a type of injection moulding defined as a two-shot mould. This technique can be used to add a soft touch to proper plastic products, add colours to a part or produce items with different performance levels.
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kinetic energy depends on both the mass of an object and on its speed. using the ratio k1k2 to see how changing one or both of these parameters changes the kinetic energy. match each case with the correct value of k1k2.
The effect on K₁/K₂ on changing the quantities are :
a)If the mass of 1 is double the mass of 2, and the speeds are the same, then ratio is 2 times
b)If the speed of 1 is double the speed of 2, and the masses are the same, then ratio becomes 4 times.
c)If The mass of 2 is double the mass of 1, and the speeds are the same, then ratio becomes half.
d)If The speed of 2 is double the speed of 1, and the masses are same, then ratio becomes 1/4 times.
e)If The speed of 1 is double the speed of 2, and the mass of 2 is double the mass of 1,then ratio becomes half.
We know that kinetic energy of any body is given by (1/2)mv² where m is the mass of the body and v is the velocity of the body.
Hence, the ratio of K₁/K₂ is changing on changing one or both of these parameters
a) when mass of first body is doubled then K₁ becomes 2 times of initial kinetic energy, then ratio will become twice of the initial value.
b)when speed of first object is doubled then kinetic energy of first object will becomes 4 times of initial energy ,therefore the ratio becomes 4 times of initial ratio.
c) If The mass of 2 is double the mass of 1, and the speeds are the same then in that kinetic energy of 2nd object will become twice of initial kinetic energy, therefore ratio will become half.
d) If The speed of 2 is double the speed of 1, and the masses are same then ratio becomes 1/4 times of initial ratio.
e) If The speed of 1 is double the speed of 2, and the mass of 2 is double the mass of 1, then in that case ratio becomes half of initial ratio,
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(Complete question) is:
Kinetic energy depends on both the mass of an object and on its speed. Ki the kinetic energy. Using the ratio K₁/K₂ to see how changing one or both of these parameters changes the kinetic energy. Match each case with the correct value of ratio K₁/K₂. 1) The mass of 1 is double the mass of 2, and the speeds are the same.2) The speed of 1 is double the speed of 2, and the masses are the same. 3) The mass of 2 is double the mass of 1, and the speeds are the same. 4) The speed of 2 is double the speed of 1, and the masses are the same. 5) The speed of 1 is double the speed of 2, and the mass of 2 is double the mass of 1.
12. Define aerobic capacity. How does it relate to cardiorespiratory endurance?
from the top of a tall building, you drop two table tennis balls, one filled with air and the other with water. both experience air resistance as they fall. which ball reaches terminal velocity first? do both hit the ground at the same time?
The air-filled table tennis ball is the first to reach the terminal velocity.
No, the water-filled table tennis ball will be the first to hit the ground.
What is meant by terminal velocity?The maximum velocity attained by an object as it falls through a fluid is known as terminal velocity.
It demonstrates that the terminal velocity of a body is directly related to the object's weight for the same radius.
The lighter air filter table tennis is the first to attain terminal velocity. Because its mass is lighter for the same shape and size, the friction force of upward resistance equals the downward force of mg sooner. To hit If the terminal velocity of the water-filled table tennis ball is greater and it strikes the ground first, the force of gravity on the ball increases.
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During a game of tug-of-war, two students are pulling on a rope. One student pulls to the left with a force of 35 N, while another student pulls to the right with a force of 35 N. What is the net force being applied to the rope, and in which direction will the rope move?
35 N; the rope will move to the right
70 N; the rope will stay stationary
17.5 N; the rope will move up
0 N; the rope will stay stationary
Answer: 0N; the rope will remain stationary
Explanation: Connexus
Net force applied on the rope is 0 N and the rope will stay stationary.
What is force?An object's push or pull is seen as exerting a force. The interaction of the objects produces push and pull. You can also use words like stretch and squeeze to describe force.
The definition of force in physics is: The push or pull on a mass-containing item changes its velocity.
Given that:
One student pulls to the left with a force of 35 N.
Another student pulls to the right with a force of 35 N.
Hence, these forces act in opposite direction.
Net force applied on it = 35 N - 35 N = 0 N.
So, the net force of zero newton being applied to the rope, and the rope remains stationary.
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Which describes a positive or negative net force acting on an object? Check all that apply
Answer: It can cause an object to accelerate.
It can cause an object to stop moving
It can cause an object to start moving.
It can cause an object to change directions.
It can cause an object at rest to remain at rest.
Explanation:
1. what hypothesis will the experiment test? whether land or water heats faster 2. what are the variables? land and the water 3. what purpose would the sand serve? 4. what purpose would the water serve? 5. what purpose would the heat lamps serve? 6. what purpose would the thermometers use? 7. how can you use these materials to test whether land or water heats faster? 8. how would you compare whether land or water heats faster? 9. within a 24-hour period, at what three points should the temperature be taken? why? 10. what would an effective conclusion need to include?
Land surfaces being darker absorb much more solar radiation than water. . Water leads in reflecting the most solar radiation that reaches the surface back in to the atmosphere.
How does this occur?
Sand heats up faster than water because it contains a lower specific heat. Water one the other hand requires one calorie of energy to raise the temperature of one gram of water by one degree Celsius. Sand takes 19 calories per gram to raise the temperature of the sand by 1 degree Celsius. While Sand requires fewer calories to raise its temperature one degree Celsius and that’s why it heats up faster than water.
Land absorbs more solar radiation the land surface retains more heat as do the vegetation for energy.
Therefore during this experiment the Sand did heat up much faster than water during this experiment. This happened because of the specific heat of the sand caused it to start heating up rapidly under the lamp as the time went.
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400 turn circular coil with a radius of 0.3 m is rotated through a quarter turn in 0.417 ms (this corresponds to 60 revolutions per second). suppose the plane of the loop was initially perpendicular to a uniform magnetic field. if the average induced voltage is 10 kv, what is the magnitude of the magnetic field?
Bohr atomic model can not predict spectra for multielectron atom.
What is Bohr atomic model?
The Bohr model postulates that the electrons are orbit the nucleus at fixed energy if levels. Orbits further from to the nucleus to exist at highest energy levels.
Sol-
Bohr’s theory was unable to explained the followings observations :
i) Bohr’s model could not explain the spectra of atoms containing more than one of electron.
ii) It never not explain the Zeeman effect.
In presence of the magnetic of field, each of spectral line gets split up to into fine lines, the phenomenon is known as Zeeman effect.
iii) It could not explain the to Stark effect.
In presence of the electric of field, each spectral line gets split up into fine lines, the phenomenon is known as as the Stark effect.
iv) The main objection to the Bohr’s model was raised by Heisenberg’s uncertainty principle.
According to the Heisenberg’s uncertainty principle, it is impossible to determine the simultaneously the exact position and the momentum of a small moving particle like an electron.
But, according to Bohr’s model electron moves in well-defined orbits around the nucleus, and hence its position, as well as momentum, can be determined simultaneously, which is against the of uncertainty principle.
So, electron moves in well-defined orbits around to the nucleus is impossible.
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3. What group of elements found on the periodic table are NOT used when determining the number of
valence electrons a group has?
Answer: Transition metals
Explanation:
Help, fast!
If you have an 18 Ohm light bulb connected to a 9.0 V cell, what is the current in the circuit?
Answer:
Explanation:
Given:
R = 18 Ohm
U = 9.0 V
__________
I - ?
Ohm's law:
I = U / R
I = 9.0 / 18 = 0.5 A
In florida, after three months, a driver with a learner's permit may drive until _____.
In florida, after three months, a driver with a learner's permit may drive until 10 P.M.
According to the Florida Department of Highway Safety and Motor Vehicles (HSMV), a learner's daytime license only permits you to drive until 10 p.m. and only during daylight hours for the first three months.
What is learner's liscense?
A learner's permit serves as a restricted driving license that permits a person to practice driving in open spaces around the nation while accompanied by someone who has a regular driving permit.
Therefore, In florida, after three months, a driver with a learner's permit may drive until 10 P.M.
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In florida, after three months, a driver with a learner's permit may drive until 10 P.M.
What is learner's liscense?
A learner's permit serves as a restricted driving license that permits a person to practice driving in open spaces around the nation while accompanied by someone who has a regular driving permit.
According to the Florida Department of Highway Safety and Motor Vehicles (HSMV), a learner's daytime license only permits you to drive until 10 p.m. and only during daylight hours for the first three months.
Therefore, In florida, after three months, a driver with a learner's permit may drive until 10 P.M.
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how much work does tension do on the laptop as it moves 2.0 mm ? express your answer with the appropriate units.
The work done by tension force of 14N applied on the laptop by a rope as it moves 2.0 mm up the slope is 0.028 J
W = F d cos θ
W = Work done
F = Force
d = Displacement
θ = Angle between force and displacement vector
F = 14 N
d = 2 mm = 0.002 m
θ = 0
W = 14 * 0.002 * 1
W = 0.028 J
Work done is the change in energy of an object. So if an object moves a certain distance, work is done on the object. If the force and displacement are perpendicular to each other there is no work done on the object.
Therefore, the work done by tension on the laptop is 0.028 J
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a compound microscope has objective and eyepiece focal lengths of 6.0 mm and 1.6 cm , respectively. if the lenses are 8.6 cm apart, what is the magnification of the instrument?
To learn about the focal length and magnification to solve this problem.
What is focal length?
The focal length of a narrow lens in air is measured from the lens's center to its primary foci, also known as focal points. The focal length of a converging lens, such as a convex lens, is positive and determines how far a collimated light beam must travel to focus on a single point.
What is magnification?
The size of a picture in relation to the size of the item that created it is known as magnification in optics. The term "linear" magnification—also referred to as "lateral" or "transverse" magnification—describes the ratio of image length to object length as measured in planes perpendicular to the optical axis.
Given U₀ = 3cm, f₀= 2.5cm, v₀=mage distance for objective lens
1/f₀= 1/v₀- 1/u₀
1/v₀=1/f₀+1/u₀=1/2.5-1/3
v₀= 3*2.5/3-2.5= 15cm
Object distance for eye piece =20−15=5cm
Given Ue= -5cm, Fe= 6cm, Ve = image formed by eye piece
1/Ve= 1/Fe +1/ Ue= 1/6-1/5
Ve=-30cm
magnification m = -L/F₀*25/Fe
where L is the length of the microscope
here L= 20 cm
m= -20/25*25/6= -33.33
Therefore, the focal length is 15cm and the magnification is 33.33 cm.
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Why is the choice of a radiopharmaceutical important in radioisotope imaging?
A diagram of a closed circuit with a power source on the left labeled 120 V. There are 3 resistors in parallel, separate paths, connected to it labeled 5.0 Ohms, 10.0 Ohms and 15.0 Ohms.
What is the equivalent resistance in this parallel circuit?
Ω
What is the voltage in the circuit?
V
What is the total current in the circuit?
A
The radiopharmaceutical is important in radioisotope imaging because it must be able to show the required organ correctly. The equivalent resistance is 2.72 ohm and the current is 44.1 A.
What is a circuit in parallel?We know that when a circuit have been connected in parallel then it means that the resistors have been connected to a common junction. It is clear that we have the circuit that have the resistors; 5.0 Ohms, 10.0 Ohms and 15.0 Ohms.
We then have;
1/R = 1/5 + 1/10 + 1/15
1/R = 0.2 + 0.1 + 0.067
R = 2.72 ohm
The current in the circuit can be obtained from;
I = 120 V/ 2.72 ohm
I = 44.1 A
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A double-slit experiment yields an interference pattern due to the path length difference from light traveling through one slit versus the other. Why does a single slit show a diffraction pattern?.
Light bends around the obstacles like the waves and this bend cause the diffraction pattern. single slit shows a diffraction pattern because of the path length difference from waves originating at different parts of the slit.
The double-slit experiment demonstrates that mild and remember can show traits of each classically described wave and debris; moreover, it presents the fundamentally probabilistic nature of quantum.
Mechanical phenomena. young's authentic double-slit experiments have been in fact the primary to illustrate the phenomenon of interference. when he shone mildly via two slender slits and determined the sample created on the display screen, the younger did not locate brilliant regions similar to the slits, however as an alternative noticed vivid and darkish fringes.
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A volumetric pipette has an uncertainty of 0. 01cm3. What are the lowest and highest possible volumes for a measurement of 0. 20cm3.
In a volumetric pipette which has an uncertainty of 0. 01 cm³, for a measurement of 0. 20cm3, the lowest possible value is 0.195 cm³
and highest possible value is 0.205 cm³.
Measurement uncertainty = 0.01 cm³
Error = uncertainty value/2 = 0.01/2 = 0.005 cm³
The formula to calculate the possible values for a volumetric pipette with uncertainty0.01 cm³ is give below.
Possible values = measured value ± Error.
Lowest possible value = 0.20 - 0.005
= 0.195 cm³
Highest Possible Value = 0.20 + 0.005
= 0.205 cm³
Thus, for a volumetric pipette, the lowest possible value is 0.195 cm³ and highest possible value is 0.205 cm³.
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The driver of a 1000 kg car is speeding. He loses control and collides with a wall, coming to a stop.
The crumple zone of the car absorbed 90 kN of force in 0.5 seconds. What was the car's speed at the
time of impact?
45 m/s is the car's speed at the time of impact.
m=1000 kg
F=90 kN= 90000 N
T= 0.5 seconds
F=mv/t
v=Ft/m
v=90000×0.5 ÷1000
V=45 m/s
Speed is a scalar variable that expresses how much an object's location varies over time or how much it moves per unit of time. It is frequently abbreviated as "s."
The distance traveled by an object during a period of time divided by the length of the period gives the average speed of the object throughout that period.
The speed-related measures are time divided by distance. The most prevalent unit of speed in daily life is the kilometer per hour (kph), but the SI measure of speed is the meter per second (m/s).
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an satellite is said to be in geosynchronous orbit if the period of its orbit is equal to the period of rotation of the star or planet. for a satellite in geosynchronous orbit around the neutron star, what is its distance from the surface of the star?
Such an orbit places a satellite at a height of around 35,786 km (22,236 mi) above mean sea level. At relation to the surface of the Earth, it remains in the same place.
A prograde, low-inclination orbit with a period of 23 hours, 56 minutes, and 4 seconds is known as a geosynchronous orbit (GEO). Even if it may seem to move north and south, a spacecraft in geosynchronous orbit appears to stay above Earth at a constant longitude.
what is geosynchronous orbit?
The word "geosynchronous" describes the satellite's orbital period, which allows it to be in phase with the rotation of the Earth ("geo-"). In addition to the criteria for orbital time, the satellite must also be situated in an orbit that places it close to the equatorial in order to qualify as geostationary.
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Such an orbit places a satellite at a height of around 35,786 km (22,236 mi) above mean sea level. At relation to the surface of the Earth, it remains in the same place.
What is geosynchronous orbit?
The word "geosynchronous" describes the satellite's orbital period, which allows it to be in phase with the rotation of the Earth ("geo-"). In addition to the criteria for orbital time, the satellite must also be situated in an orbit that places it close to the equatorial in order to qualify as geostationary.
A prograde, low-inclination orbit with a period of 23 hours, 56 minutes, and 4 seconds is known as a geosynchronous orbit (GEO). Even if it may seem to move north and south, a spacecraft in geosynchronous orbit appears to stay above Earth at a constant longitude.
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HELP STUCK IN PHYSICS 100PTS!!!
A small piece of putty of mass 27 g and
negligible size has a speed of 2.2 m/s. It makes
a collision with a rod of length 5 cm and mass
78 g (initially at rest) such that the putty hits
the very end of the rod. The putty sticks to
the end of the rod and spins around after the
collision; the putty-rod center of mass CM has
a linear velocity v and an angular velocity ω
about the CM.
(a)What is the angular momentum of the system relative to the CM after the collision?
The rod has a moment of inertia equal to (1/12)MR^2
about its center of mass; consider
the piece of putty as a point mass. Assume
the collision takes place in outer space where
there is no gravitational field and no friction.
Answer in units of kg · m2
/s.
(b)What is the system’s angular speed about the
CM after the collision?
Answer in units of rad/s.
please help I'm so confused :(
Assume: This collision takes place in outer space where there is no gravitational field and no friction. A small piece of putty of mass 31 g and negligible size has a speed of 2.5 m/s. It makes a collision with a rod of length 3 cm and mass 83 g (initially at rest) such that the putty hits the very end of the rod. The putty sticks to the end of the rod and spins around after the collision. After the collisions the center-of-mass has a linear velocity V and an angular velocity ω about the center-of-mass “+ cm”. What is the velocity V of the center-of-mass of the system after the collision? Answer in units of m/s. Icm = 1/12 MR^2 Ipm = MR^2 The Attempt at a Solution First I said that that the moment of inertia for the system is I=1/12(M+m)R^2 ("M" being the mass of the rod and "m" being the mass of the putty) Then using conservation of angular momentum i got: mR^2w = (R^2/12)(M+m)w substituting the respect v's (and Rs) in for w i got: mv1R = (R/12)(M+m)v2 then v2 = 12mv1/(M+m) plugging in my numbers i got [12(31)(2.5)]/[(31+83)] = 8.16 m/s