onsider laminar flow of a fluid through a square channel with smooth surfaces. now the average velocity of the fluid is doubled. determine the change in the head loss of the fluid. assume the flow regime remains unchanged
The head loss doubles when the average velocity is doubled.
The velocity formula: why?
The vector quantity velocity (v), denoted by equation v = s/t, quantifies dislocation (or shift in position, s), over change in time (t).
How do velocity and speed differ?Velocity is the pace and direction of the an object's movement, whereas speed is the timekeeping at which an object is travelling along a path.In other words, velocity is a vector, whereas speed is indeed a scalar value.
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Newton’s second law of motion on a flying chair swing ride
The ride is powered by a motor that makes the swing ride spin around the centre axis of the ride. The chairs move in a circle at a moderate speed. The forces acting on a swing rider are the tension in the chain and the weight of the rider.
Explanation:When the swing moves from the lowest point up to either peak, the main force acting is momentum; and when the swing falls from either peak to its lowest point, the main force acting is gravity. The movement of the pendulum is said to be simple harmonic motion because the restoring force acts directly proportional to the displacement and is directed towards the equilibrium position. Hence, the movement of the Pendulum is simple harmonic motion.
What do you find most difficult about developing a research topic? What strategies are you most likely to use now that you have information about how to develop a quality topic? << Read Less
The most difficult issue about developing a research topic can be to raise the right questions, while strategies to use when we already have information about how to develop a quality topic is to develop suitable experiments and or observational procedures.
What is the scientific method?The scientific method is a series of well organized steps used to collect scientific information, which is first based on observation of the real words that can be used to raise questions in order to understand such observations.
Subsequently, the scientific method requires raising explanations or hypotheses which may be tested (either confirmed or rejected) by experiments and or observational procedures.
Therefore, with this data, we can see that the scientific method is based on asking the right questions, which then leads us to develop experimental procedures or also observations in order to test the working hypothesis.
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You push on the door and it opens explain what happens in terms of action reaction forces 
Answer:
When you push on the door and it opens, the action-reaction forces at play are the force you exert on the door and the force the door exerts on you.
According to Newton's third law of motion, when two objects interact, they exert equal and opposite forces on each other. In this case, when you push on the door, you are applying force to the door. This force is then met by an equal and opposite force from the door, which pushes back against your hand.
The magnitude and direction of the forces depend on the relative mass and acceleration of the objects. In this case, the door is much heavier than your hand, so it requires a greater force to move it. As a result, the door exerts a greater force on your hand in the opposite direction, causing your hand to move backward.
Overall, the action-reaction forces at play in this situation are the force you exert on the door and the force the door exerts on you, which are equal in magnitude but opposite in direction. These forces act to accelerate the door and your hand in opposite directions, causing the door to open and your hand to move backward.
part 1 of 2
A shell is fired from the ground with an initial speed of 1.70 \times 10³ m / s (approximately five times the speed of sound) at an initial angle of 52.0° to the horizontal.
The acceleration of gravity is 9.81 m /s²
a) Neglecting air resistance, find the shell's horizontal range.
Answer in units of m
answer in units of m
part 2 of 2
b) How long is the shell in motion?
Answer in units of s
Answer in units of s
(a) The shell's horizontal range is determined as 286,138.2 m.
(B) The time of motion of the shell is 273.4 s
What is the horizontal range of the shell?
The horizontal range of the shell is the horizontal distance travelled by the shell and it is calculated by applying the following formula as shown below.
R = u² sin (2θ) / g
where;
u is the velocity of the shellθ is the angle of projection of the shellg is acceleration due to gravityR = ( (1.7 x 10³)² x sin ( 2 x 52 ) ) / ( 9.8 )
R = 286,138.2 m
The time of motion of the shell is calculated as follows;
T = 2u sinθ / g
T = ( 2 x 1.7 x 10³ x sin 52 ) / ( 9.8 )
T = 273.4 s
Thus, the time of motion of the shell is the time spent in air by the shell.
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an unsuccesstul life-historv strategv would be associated with bopulations that: decrease in size over time increase in size over time either decrease or do not change in size over time either increase or do not change in size over time.T/F
False. An unsuccessful life-history strategy would be associated with populations that decrease in size over time.
Life-history strategies are the ways in which organisms allocate their resources (such as time, energy, and nutrients) to various life-history components, such as reproduction, growth, and survival. Unsuccessful life-history strategies are those that do not result in the long-term survival and reproduction of the organisms following that strategy. Such strategies may result in populations that do not increase in size or even decrease over time.
On the other hand, successful life-history strategies are those that result in the long-term survival and reproduction of the organisms following that strategy. These strategies may result in populations that increase in size over time or at least remain stable.
It is important to note that the success or failure of a life-history strategy depends on the specific environment and conditions in which the organism is living. What may be a successful strategy in one environment may not be successful in another.
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PLEASE HELP ME ANSWER THE PHYSICS QUESTIONS ON MY PROFILE!!! i will give brainliest to the first to answer!!! this one and the other ones LAST QUESTION!!!!!!!!!!!!! GET A BRAINLIEST
How far does a plane fly in 18 s while its velocity is changing from 146 m/s to 78 m/s at a uniform rate of acceleration?
which of the following is a well-known framework for quantifying severity or the criticality of vulnerabilities?
The following traits are frequently present in vulnerabilities with high scores. It was challenging to take advantage of the weakness. If exploited, privileges might be increased. Exploitation might cause a large loss of data or period of unavailability.
What framework for quantifying severity?The criticality and vulnerability assessment tool from ABB is a structured, quick assessment method used to rank plant areas, systems, or pieces of equipment. There is never a lack of issues to tackle, but there are always restrictions on the amount of time, money, or staff available.
Therefore, A Critical Vulnerability is one that can be actively exploited or for which a publicly accessible attack or proof-of-concept code exists.Both techniques for displaying the rankings and severity of security flaws are supported by Code Insight.
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Determine whether the Law of Sines or the Law of Cosines is needed to solve the triangle. Then solve the triangle. Round your answer to two decimal places. a= 19, b= 21. C = 75° = O Law of Sines: A = 75°, B = 48.770, = 21 O Law of Sines; A = 48.77°, B = 75°, c = 21 Law of Sines: No solution Law of Cosines: A = 48.77°, B = 56.23° c = 24.40
When we are provided either a) two angles and one side or b) two sides and an excluded angle, we utilize the sine rule. When we have either a) three sides or b) two sides and the included angle, the cosine rule is used.
Therefore, you either need two sides and an angle to solve for the remaining side or all three sides to solve for an angle. Therefore, you can't just use the rule of cosines if you have two angles (which allows you to figure out the third, making it technically three angles) and a side. The Law of Sines cannot be applied to triangles with two sides and an included angle or three sides.
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The _____ the activation energy, or the _____ the temperature, the larger the fraction of sufficiently energetic collisions, the greater the value of k, and the greater the reaction rate.
Higher temperatures or lower activation energies result in more sufficiently energetic collisions, which increases the fraction of such collisions, increases the value of k, and increases reaction rates.
What are the four components of the collision theory?The consequences are explained by the collision theory. These variables include temperature, catalysts, surface area, concentration, and reactant type. Each of these influences raises the number and energy of collisions, which increases reaction rate.
What among the three crash theories holds true here?The hypothesis states that responding particles usually collide without reacting. For interactions to take place, reacting particles need to collide with enough energy, in the appropriate direction, and with enough mass.
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A 95kg solid sphere with a radius of 15cm is suspended by a vertical wire attached to the ceiling of a room. A torque of 0.20Nm is required to twist the sphere through an angle of 0.85rad. What is the period of oscillation when the sphere is released from this position?
The period of oscillation of the sphere is 161 seconds.
What is oscillation?
Oscillation is the repetitive movement of a particle or system about a central position or equilibrium point. Oscillations can occur in a variety of forms, such as periodic oscillations (which repeat at regular intervals), damped oscillations (which gradually decrease in amplitude over time), and driven oscillations (which are driven by an external force).
To find the period of oscillation of the sphere, you need to know its angular frequency, which is given by the following formula:
angular frequency = sqrt(k / I)
where k is the angular spring constant (also known as the torsional spring constant), and I is the moment of inertia of the sphere.
The angular spring constant is given by the following formula:
k = torque / angle of twist
Plugging in the values from the problem, you get:
k = 0.20Nm / 0.85rad = 0.235Nm/rad
The moment of inertia of a solid sphere is given by the following formula:
I = (2/5) * mass * radius^2
Plugging in the values from the problem, you get:
I = (2/5) * 95kg * (15cm)^2 = 6750kg*cm^2
Plugging these values into the formula for angular frequency, you get:
angular frequency = sqrt(0.235Nm/rad / 6750kg*cm^2) = 0.0062rad/s
The period of oscillation is the reciprocal of the angular frequency, so you can calculate it using the following formula:
period = 1 / angular frequency
Plugging in the value for angular frequency that you calculated above, you get:
period = 1 / 0.0062rad/s = 161s
Therefore, the period of oscillation is 161 seconds.
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The current theory of the structure of the
Earth, called plate tectonics, tells us that the
continents are in constant motion.
Assume that the North American continent
can be represented by a slab of rock 5500 km
on a side and 34 km deep and that the rock
has an average mass density of 2830 kg/m3
.
The continent is moving at the rate of about
2.4 cm/year
According to the information given, the continent weighs 2.422 * 10²¹ kg.
Volume is the amount of space a thing occupies, whereas mass is the amount of stuff it contains.
What is the rock's mass?
The following formula is used to calculate the rock's mass:
Volume times Density = Mass
The rock has a density of 2830 kg/m³
Area of side * Depth of rock equals the volume of the rock.
The rock's volume is equal to 5.5 * 10⁶ m x 5.5 * 10⁶ m x 2.83 * 10⁴ m
The rock's volume is 8.56 * 10¹⁷ m³
Rock mass: 8.56 * 10¹⁷ m³ * 2830 kg/m³
The rock weighs 2.422 * 10²¹ kg
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In the figure, a red car and a green car, identical except for the colour, move toward each other in adjacent lanes and parallel to the xâaxis. At time t=0, the red car is at x r =0, and the green car is at x g =220m. If the red car has a constant velocity of 20km/h, the cars pass each other at x=44.5m, and if it has a constant velocity of 40km/h, they pass each other at x=76.6m. What is the constant acceleration of the green car?
The constant acceleration of the green car which passes red color car is 2.81 m/s^2.
In this problem, the initial positions of the red and green cars are xr = 0 and xg = 220 m, respectively, and their initial velocities are vr = 20 km/h and vg = 0. When the red car has a velocity of 20 km/h, the cars pass each other at x = 44.5 m, and when the red car has a velocity of 40 km/h, they pass each other at x = 76.6 m.
We can use these two equations to solve for the acceleration of the green car. First, we convert the velocities from kilometers per hour to meters per second by dividing by 3.6. This gives us vr = 5.56 m/s and vg = 0 m/s.
Then, we can substitute these values into the equation for position and solve for the acceleration. When the red car has a velocity of 20 km/h, the equation becomes:
x = 0 + 5.56t + 1/2at^2
x = 44.5
Solving for a, we find that the acceleration of the green car is a = 2.61 m/s^2.
When the red car has a velocity of 40 km/h, the equation becomes:
x = 220 + 11.11t + 1/2at^2
x = 76.6
Solving for a, we find that the acceleration of the green car is a = 2.61 m/s^2.
When the red car has a velocity of 40 km/h, the equation becomes:
x = 220 + 11.11t + 1/2at^2
x = 76.6
Solving for a, we find that the acceleration of the green car is a = 3.02 m/s^2.
Since the acceleration is the same in both cases, we can take the average of these two values to find the constant acceleration of the green car. The average of 2.61 m/s^2 and 3.02 m/s^2 is 2.81 m/s^2.
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What do you understand by the term "Eigen function and Eigen value" in quantum mechanics. Give an example each.
In quantum mechanics, an eigenfunction is a function that satisfies a particular differential equation and is used to describe the behavior of a physical system. An eigenvalue is a scalar value that corresponds to an eigenfunction and represents the magnitude of a physical property of the system.
An example of an eigenfunction in quantum mechanics is the wavefunction, which is used to describe the probability distribution of a particle in a particular state. The wavefunction is an eigenfunction of the Schrödinger equation, which is a fundamental equation in quantum mechanics that describes the time evolution of a physical system.
An example of an eigenvalue in quantum mechanics is the energy of an atom in a particular state. The energy of an atom is an eigenvalue of the Hamiltonian operator, which is a mathematical operator that describes the energy of a physical system.
In general, eigenfunctions and eigenvalues play a central role in the analysis of quantum mechanical systems and are important tools for understanding the behavior of particles at the atomic and subatomic scales.
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7. What was one advantage of the Stanford-Binet scale intelligence tests over previous ones?
The Stanford-Binet scale tests were more accurate.
The Stanford-Binet scale tests were given with paper and pencil versus conducting one-on-one interviews
The Stanford-Binet scale tests accounted for differences in social class.
The Stanford-Binet scale tests accounted for differences in test takers from different social classes.
Answer:
One advantage of the Stanford-Binet scale intelligence tests over previous ones is that they were given with paper and pencil, rather than conducting one-on-one interviews. This allowed for a more standardized and objective administration of the test, which helped to improve the reliability and validity of the test scores. Additionally, the Stanford-Binet scale tests were designed to account for differences in test takers from different social classes, which previous intelligence tests did not do. This made the Stanford-Binet scale tests more fair and unbiased, and allowed for more accurate comparisons between test takers.
can anyone please help me answer this question the assignment will close in 30 mins please help me quick
Answer: D. 34.03
Explanation:
To solve this problem, we can use the equation for the conservation of energy, which states that the change in internal energy of a closed system is equal to the heat added to the system. We can express this equation as follows:
13. Which statement BEST describes one of the differences between the Wechsler tests and the older Stanford-Binet tests?
Wechsler tests provides scores on seven different types of intelligence; Stanford-Binet tests did not.
Wechsler tests distinguishes between general and specific intelligence; Stanford-Binet tests did not.
O
Wechsler tests musical ability as well as general intelligence; Stanford-Binet tests did not.
Wechsler tests removed the concept of mental age that was part of the Stanford-Binet tests.
Answer:
B. Wechsler tests distinguishes between general and specific intelligence; Stanford-Binet tests did not.
Explanation:
One of the main differences between the Wechsler and Stanford-Binet tests is that the Wechsler tests distinguish between general and specific intelligence. This means that the Wechsler tests provide separate scores for different types of intelligence, such as verbal comprehension and perceptual reasoning, whereas the Stanford-Binet tests did not. Additionally, the Wechsler tests measure a wider range of abilities than the Stanford-Binet tests, including musical ability and memory. The Wechsler tests also do not use the concept of mental age, which was a key feature of the Stanford-Binet tests.
Which of the following describes a natural satellite?
an object that senses radiation from celestial objects
an object that observes another planet
an object that orbits another planet
an object that records images of celestial objects
Answer:
An object that orbits another planet describes a natural satellite.
Explanation:
Due to the nature of this problem, do not use rounded intermediate values in your calculations
Find the currents flowing in the circuit in the figure below. (Assume the resistances are
R1 = 20 Ω,
R2 = 6 Ω,
R3 = 15 Ω,
R4 = 10 Ω,
r1 = 0.5 Ω,
r2 = 0.25 Ω,
r3 = 0.25 Ω,
and
r4 = 0.5 Ω.)
I1 = A
I2 = A
I3 = A
The currents flowing in the circuit in the given figure are;
I₁ = 0.47855 A, I₂ = -0.428 A, I₃ = 1.02445 A
How to find the current in the circuit by Kirchoffs' Voltage Law?Kirchhoff's voltage law states that the algebraic sum of the potential differences in any loop must be equal to zero as: ΣV = 0.
Given the various resistances and circuit we will apply Kirchhoff's voltage law and Junction Law
Apply Kirchhoff's law to the left side loop to get;
E₁ + E₂ = ( r₁ + R₁ + R₄ ) I₁ + ( R₂ + r₂ ) I₃
18 + 3 = (0.5 + 20 + 10)I₁ + (6 + 0.25) I₃
21 = 30.5 I₁ + 6.25 I₃ ----( 1 )
Apply Kirchhoff's law to the right side loop to get;
E₃ - E₄ - E₂ = (r₃ + r₄ + R₃)I₂ - (r₂ + R₂)I₃
12 - 24 - 3 = (0.25 + 0.5 + 15) I₂ - (0.25 + 6) I₃
-15 = 15.75I₂ - 6.25 I₃ --- ( 2 )
Applying the law of Junction to get;
I₁ = I₂ + I₃
Put I₂ + I₃ for I₁ in eq 1 to get;
21 = 30.5(I₂ + I₃) + 6.25 I₃
21 = 30.5I₂ + 30.5I₃ + 6.25 I₃
21 = 30.5I₂ + 36.75I₃ -----(3)
Solving equations 2 and 3 simultaneously gives us;
I₁ = 0.492 A, I₂ = -0.5459 A, I₃ = 1.02445 A
Thus;
I₁ = -0.5459 + 1.02445
I₁ = 0.47855
Hence we can conclude that the currents flowing in the circuit are as follows : I₁ = 0.47855 A, I₂ = -0.428 A, I₃ = 1.02445 A
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sinusoidal water waves are generated in a large ripple tank. the waves travel at 20cm/s and their adjacent crests are 5cm apart. the time required for each new whole cycle to be generated is?
a) 100 s b) 4.0 s c) 2.0 s d) 0.5 s e) 0.25 s
The time required for each new whole cycle to be generated is 0.25 s. So answer e is correct.
Sinusoidal water waves are a type of wave that is generated in a large ripple tank. These waves travel at a rate of 20cm/s and their adjacent crests are 5 cm apart. The time required for each new whole cycle to be generated is dependent upon the velocity of the wave and the distance between the adjacent crests.
To calculate the time required for a new whole cycle to be generated, we must first determine the wavelength of the wave. The wavelength is equal to the distance between the adjacent crests, which is 5 cm. Now that we know the wavelength, we can use the formula
v=λ/t
where v is the velocity of the wave (20 cm/s), λ is the wavelength (5 cm), and t is the time required for one cycle to be generated.
By substituting the given values into the equation, we can calculate the time required for one cycle to be generated.
t=λ/v,
so t=5 cm/20 cm/s,
or t=0.25 s.
Therefore, the time required for each new whole cycle to be generated is 0.25 s.
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The general driving forces behind most chemical interactions is the need for atoms to be electrically neutral and to: O donate Hydrogen ions O complete their nucleus O donate Hydroxyl ions O complete their outer electron orbital area (shell)
The general driving forces behind most chemical interactions is the need for atoms to be electrically neutral and to complete their outer electron orbital area (shell).
When both the cases are fulfilled i.e. when the enthalpy change is negative and the entropy change is positive, the reaction is said to be spontaneous and thus enthalpy and entropy are the two thermodynamic driving forces of chemical reactions.
Formation of a solid (precipitate)The creation of water.Electron transfer.Gas formationThere are several factors that affects the driving force:
1. Release of heat (exothermic reactions are driven)
2. Free energy – the change in free energy should be negative
3. Entropy – An increase in entropy drives a reaction
4. Equilibrium Shift - Removal of products drives the reaction
The general driving forces behind most chemical interactions is the need for atoms to be electrically neutral and to complete their outer electron orbital area (shell).
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a circular loop of wire with a radius of 15.0 cm and oriented in the horizontal xy-plane is located in a region of uniform magnetic field. a field of 1.2 t is directed along the positive z-direction, which is upward.
After solving the equation the the positive z-direction is 36.88 volts are the EMF is the correct answer.
Due to that,
Radius: 15 cm = 0.15 meters
The formula for the area of a circle can be used to calculate the area of the circular loop.
A = π r²
A = π × 0.15²
A = 0.0708 m²
B = 1.2T magnetic field in the positive z direction
B = 1.2 •k T.
If loop is deleted from the field during the specified time period
∆t = 2.3ms = 2.3×10^-3s
The stated average EMF is what we are looking for, and it is
ε = —∆Φ/∆t
There is no further flow.
Φf = 0
When the magnetic flux is expressed as
I = BACosΘ
where =0 since both the magnetic field and the area are pointing in the same direction.
I=BA Cos0
Φi = BA
Φi = 1.2 × 0.0708
Φi = 0.0848 Vs
Then, ε = —∆Φ/∆t
ε = —(Φf — Φi) / ∆t
ε = —(0-0.0848) / (2.3×10^-3)
ε = 0.0848 / (2.3×10^-3)
ε = 36.88 V
36.88 volts are the EMF.
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of negligible mass, spring constant k and unstretched length L. First, one spring is attached to the end of the other spring and slowly lowered to its equilibrium position. The two spring stretch a total distance of X1. Next the spring are hung side by side. The block is attached to the end of the springs and again slowly lowered to its equilibrium position. The springs each stretch a distance of X2. Which of the following correctly shows the relationship between x1 and x2?
(a) X1=X2
(b)X1=â2X2
(c)X1=2X2
(d)X1=4X2
(e)X1=8X2
The correct option is option (d) X1=4X2 is the relationship between X1 and X2.
We get the above answer through the following method,
For case 1: two springs are connected in series to stretch up to a total distance of X1.
So, for the equilibrium position,
F= mg= k’X1
For case 2: two springs are connected in parallel to stretch up to an individual distance of X2
So, for equilibruim position,
F= mg= k”X2
Let n be the number of springs, which in this case is 2.
n=2.
For a series combination of springs, effective spring constant (k’)= [tex]\frac{k}{n}[/tex]= [tex]\frac{k}{2}[/tex]
For a parallel combination of springs, effective spring constant (k”)= nk= 2k
Now, due to the conservation of force, the force applied in both cases is equal
Therefore, k’X1= k”X2
=>[tex]\frac{k}{n} *[/tex]X1= 2kX2
=>X1= 4X2
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A submarine is in water of density 1.0x 10 kg/m³. The submarine changes its depth. This causes
the pressure on it to change by 0.10 MPa.
What is the change in depth of the submarine?
A 0.10m
C 100m
B 10m
D 1000 m
Answer:
1000m
Explanation:
Pressure = p x g x h
0.1 x 10^6 = 10 x 10 x h
(0.1 x 10^6) / 100
h = 1000m
I hope my answer helps you.
If you Heat 50 grams of cold and 50 grams of cold water how does it affect the temperature change
Yes , if we heat 50 grams of cold sand and 50 grams of cold water the temperature changes according to the density of material i.e. if sand is denser than water than the water will get heated faster than the given cold sand.
What is Heat?Heat is the form of energy.The Measurement of heat is done in various units like degree Celsius, Kelvin, Fahrenheit .The S.I unit of heat is joule (J).When the energy is in the form of heat then the molecules are in motion of the substances which is heated or giving the heat.Temperature:it is the measurement of the coldness or hotness of a substances or object or place.The instrument used to measure temperature is termed as Thermometer.To know more about Heat visit
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which set of changes will always increase the current in an electrical circuit?
Answer:
increasing voltage and decreasing resistance
the equations used to describe hearing are more diverse and complex, covering a range of topics such as the physics of sound waves, the anatomy and physiology of the ear, the neural processing of sound in the brain, and the psychoacoustics of perception. these equations may include wave equations, diffusion equations, and statistical models and may be used to describe various aspects of hearing, such as the way in which sound waves are absorbed, reflected, and refracted by different materials and structures, the way in which the ear converts sound waves into electrical signals, and the way in which the brain processes and interprets these signals.
The equations used to describe hearing cover a range of topics and may include wave equations, diffusion equations, and statistical models.
Hearing is a complex process that involves the physics of sound waves, the anatomy and physiology of the ear, the neural processing of sound in the brain, and the psychoacoustics of perception. To understand and describe this process, a variety of equations are used. These may include wave equations, which describe the way in which sound waves are absorbed, reflected, and refracted by different materials and structures.
Diffusion equations may be used to describe the way in which sound is transmitted through different media, such as air, water, and bone. Statistical models may be used to describe the way in which the ear and brain process and interpret sound. Together, these equations help to provide a comprehensive understanding of the hearing process.
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Note that momentum can be related to kinetic energy: KE = p2m. The presence of friction in our experimental setup results in a ratio of (total moment before/total momentum after) the collision to be O a. Less than 1.0 because kinetic energy is lost to friction. O b. More than 1.0 because kinetic energy is gained in the collision due to friction. O c. equal to zero because of energy loss due to friction. O d. None of the above is correct.
The presence of friction in our experimental setup results in a ratio of (total moment before/total momentum after) the collision to be less than 1.0 because kinetic energy is lost to friction.
Collision is a case where one moving object or person violently collides with another.
Friction causes a constant loss of energy in moving objects because work is done by friction.
This loss of energy manifests itself as a gradual reduction in speed.As we know momentum is P = m*v i.e. momentum (P) is directly proportional to the mass and velocity.
Due to presence of friction, velocity will be reduced after collision and hence the total momentum after collision will be reduced.
So,
Total momentum before collision < Total momentum after collision
Therefore, the ratio of total momentum before and after collision will be less than 1.0.
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a 1 kg blob of putty moving at 10 m/s runs into another 1 kg stationary blob, and they stick together. the momentum of the blobs after the collision is
The momentum of the blobs after the collision of a 1 kg blob of putty moving at 10 m/s with another 1 kg stationary blob will be 5 m/s.
The term "completely inelastic collision" is used to describe every time two masses cling together after colliding. Any inelastic collision will result in the internal energy of the objects being transformed into kinetic energy. Because of this, even though the system's energy is conserved (no outside forces are at action), its internal energy is changing in an unknowable and unpredictable fashion. This implies that the concept of energy conservation in inelastic collisions is absolutely meaningless to us. However, the conserved quantity that we can monitor is momentum.
Initial momentum is expressed as p = m1v1 + m2v2,
where, I denotes vector quantities.
v2 = 0 (because the second blob is at rest).
As a result, p=m1v1, |p|=m1|v1|=1*10= 10 kg*m/s,
The total amount of momentum is conserved in a closed system. The end momentum is 10 kg*m/s and is therefore also directed in the same direction as the beginning momentum.
The combined mass is now M=m1+m2= 1+1 = 2 kg due to the fact that two blobs are now clumped together. As a result, p = mv= 10 =2v; from this, v= 10/2 = 5 m/s, headed in the same direction as the first blob's starting velocity.
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Ibrahim is a 15-year-old boy. He has been suspended for fighting on school property. How would a psychologist who emphasizes the social learning perspective explain this behavior?
A) Ibrahim has been rewarded for previous aggressive behavior.
B) Ibrahim has observed others who model aggressive behavior.
C) Ibrahim is at a stage in development when increases in male hormones predispose him to engage in aggression.
D) Ibrahim has projected his aggressive impulses onto others and anticipates that they will behave aggressively toward him.
The psychologist who emphasizes the social learning perspective explain this behavior would say that Ibrahim has observed others who model aggressive behavior. Option B
What is meant by aggressive behavior?According to social psychology, aggression refers to any conduct or action intended to hurt a person, an animal, or cause physical injury to property. Here are a few instances of aggressive behavior: physical harm. screaming, cursing, and foul language.
Aggression is an overt or covert social engagement that is frequently harmful and intended to cause harm to another person.
Aggressive behavior is forceful, reactive, and impulsive behavior that frequently leads to breaching social norms or the law.
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