According to the given statement the initial temperature of the water is 54.171°C
What is unit of temperature?The SI unit of temperature is Kelvin, which is represented by the letter K. Kelvin is part of the International System of Units.
Briefing:Mass of water
= 2290 g
= 2.29 Kg
Heat absorbed (Q) = 5.11 x 10⁵ J = 511 KJ
Water is boiling, final temperature of water
= 100°C = 373 K
When water is getting warmed, the amount of heat absorbed to increase the temperature of water by 1°C is given by heat capacity.
Specific heat capacity of water
= 4.87 KJ/Kg
Mathematically,
Q = mCΔT
where
Q = Heat absorbed
m= mass of the water
C = specific heat capacity of water
ΔT = Temperature change
= Final temperature - initial temperature
Putting numerical values
511 = 2.29 x 4.87 x ΔT
⇒ΔT = 45.829
⇒Final temperature - Initial temperature = 45.829°C
⇒100°C - Initial temperature = 45.829°C
⇒ Initial temperature = 100 - 45.829 = 54.171°C
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The character laying on the ground has just been burnt by a chemical known as potassium hydroxide, made from a potassium atom, an oxygen atom, and a hydrogen atom. This means that potassium hydroxide (like most substances) is a _____.
This means that potassium hydroxide is a Compound. Option A.
Water is formed from the chemical combination of hydrogen and oxygen. A water molecule is a chemical bond of two hydrogen atoms and one oxygen atom. Hydrogen polyoxides, also called oxidants oxyhydrogen or explosive gases, are composed only of hydrogen and oxygen atoms, joined only by single bonds, are saturated and acyclic, and have a molecular structure containing no rings or loops increase.
Hydrogen is an element consisting of a group of hydrogen atoms, and oxygen is an element consisting of oxygen atoms. But water is a compound of water molecules. Molecules that make up a compound are made up of different types of atoms, but molecules can also be made up of the same type of atoms. Two hydrogen atoms and one oxygen atom combine to form water. two hydrogen atoms and two oxygen atoms combine to form hydrogen peroxide,
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A cannon ball is fired horizontally from a cannon sitting on a cliff with a velocity of 30 m/s. The cannon ball lands 533 meters away. How long (t) was the cannon ball in the air?
The time that the cannon ball spends in the air is 17.7 seconds.
What time does the cannon ball spend in the air?The cannon ball in flight is a projectile.
Projectiles are objects that follow a parabolic path during their motion.
The time that the cannon ball spends in the air is calculated as follows:
The cannon ball is released with a horizontal velocity, u = 30 m/s
The cannon ball travels a horizontal distance, d = 533 m
When the cannonball was fired, it undergoes two types of motion:
a vertical downward motion at constant acceleration due to gravitya horizontal motion with initial velocity, u = 30 m/s and final velocity, v = 0 m/sThe time spent in the air or time of flight, t, is the same for both the horizontal and vertical motion of the cannonball.
Horizontal distance = velocity * timetime = Horizontal distance / velocityTime = 533 / 30
Times spent in the air = 17.7 seconds.
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little girl tosses an apple up toward a boy in a tree with an initial velocity of 8.50 m/s at 72o.
A. What is the maximum height reached by the apple
The maximum height reached by the apple thrown with an initial velocity of 8.50 m / s at 72° is 6.65 m
H = u² sin²θ / g
H = Maximum height
u = Initial velocity
g = Acceleration due to gravity
u = 8.5 m / s
g = 9.8 m / s²
θ = 72°
H = 8.5² sin² ( 72° ) / 9.8
H = 72.25 * 0.9 / 9.8
H = 6.65 m
If an object is thrown with an initial velocity at angle with the ground, it will move in a projectile motion. The object thrown is called as a projectile.
Therefore, the maximum height reached by the apple is 6.65 m
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a fast moving object has/ a potential energy \ b or more kinetic energy
Answer:
Faster-moving objects have more kinetic energy than slower objects.
Explanation:
A faster-moving object has:
a. more potential energy
b. more kinetic energy
c. equal kinetic and potential energies
d. energy based on the weight of the object
Hope this helps.
when trying to stop a car on icy pavement in as short a distance as possible, is it better to slam on the brakes and skid to a stop or apply the brakes more gently and roll to a stop?
Tapping the brakes is almost definitely going to be better than not tapping the brakes.
Using the brakes causes the static friction between your tires and the road to increase; which slows down the car more.
The issue is that when the grip between the brakes and the tire is too strong, the coefficient of friction between the tires isn't high enough to maintain that static contact. This is when the wheels "lock up" and begin to skid. As you mention, kinetic friction is less than static friction, so wheel lock and skidding should be avoided.
This means that tapping the brakes is generally the best braking method in these conditions, as compared to not braking at all.
When considering modern vehicles, your friend missed the mark even more. Most vehicles sold now (as far as I know) have an ABS, an Anti-lock Braking System which actually disengages the brakes when they reach the threshold when you start to lose traction. Basically, you can push down on the brake pedal as hard as you want, and you can feel the brakes start "tapping" on their own, to prevent skidding, increase traction, and allow you to brake in the lowest space possible. Tapping is the method most cars automatically employ on icy surfaces, and if you try it for yourself (in a controlled environment), you will find that tapping the brakes should slow you down a lot faster than not pressing it at all; especially if you avoid skidding.
Hence,
Tapping the brakes is almost definitely going to be better than not tapping the brakes.
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A particle executing SHM along a straight line has a velocity of 4cm/s, when at a distance of 3cm from its mean position and 3cm/s, When at a distance of 4cm from it. Find the time it takes to travel 2.5cm from its mean position.
The time it takes to travel 2.5cm from its mean position is 1.048 secs.
Describe the mean position.When there is no net force exerted on the body, it is in the mean position, sometimes referred to as the equilibrium position. An oscillating particle's phase: This shows how the particle is vibrating right now.
Given,
case(1), V1=4ms−1,y1=3m,
case(II), V2=3ms−1,y2=4m.
We know that, V=ω√( a^2−y^2 )
Case (I) 4=ω√(a^2−3^2)..(i)
Case(II) 3=ω√(a^2−4^2) …(ii)
Dividing (i) by (ii) , we get
16a^2−256=9a^2−81
After solving we get,
a=√25 =5m
Substituting it in (i), we get
ω= 4 / 4 = 1 rads^−1
When the particle is 2.5 meters from the extreme location, its distance from the mean position is given by the equation x = 5−2.5 = 2.5m.
Given that SHM must note the time from an extreme point, we will apply the relation:
x=acosωt.
2.5= 5cos 1 × t = 5 cos t
=> cost = 2.5/5 = 1/2 = cos ( [tex]\pi[/tex]/3 )
=> t = [tex]\pi[/tex] / 3 = 22 /7 x 3 = 1.048 secs
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Pls solve answer with explanation.. physics problem
Answer:
9Ms correct answer ???????????//?
Students measured the temperature of the water at different depths in lake hale and found that the temperature varied
The independent variable in this condition of a varied temperature of the lake include the following:
DepthSun intensity.What is Independent variable?This is the type of variable which doesn't depend on the condition of others and is usually altered by scientists so as to causal effects on the other types of variables which are present in the experiment.
In this scenario, the independent variables are those which are responsible for the temperature difference of the Lake hale and they include the depth and sun intensity. An increase in depth means the temperature will be lower while an increase in sun intensity means increase in temperature.
The dependent variable is the temperature which is affected by the changes in the parameters listed above.
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The other part of the question is:
What is the independent variable?
What does mass of an object depend on
Answer:
the inertia of an object
a block with mass m1 is placed on an inclined plane with slope angle α and is connected to a second hanging block that has mass m2 by a cord passing over a small, frictionless pulley. the coefficient of static friction is μs and the coefficient of kinetic friction is μk
The mass m2 for which block m1 moves up the plane at constant speed once it is set in motion is:
m2 = m1 (sinα + μkcosα)
The tension in the cord should be [tex]m_{2}[/tex]g so the that the hanging block over a frictionless pulley can move at constant speed. This tension in the cord should the component of gravitational force and the force of friction.
Now
[tex]m_{2}[/tex]g = ([tex]m_{1}[/tex]g(sinα) +μk([tex]m_{1}[/tex]g)cosα)
[tex]m_{2}[/tex]g = [tex]m_{1}[/tex]g(sinα +μkcosα)
[tex]m_{2}[/tex] = [tex]m_{1}[/tex] (sinα + μkcosα)
So the mass [tex]m_{2}[/tex] for which m1 moves up the plane at constant speed once it is set in motion is:
m2 = m1 (sinα + μkcosα)
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Answer with explanation pls
Car moves 3m after 5 seconds.
What is a Straight Line Motion?If an object's location changes over time in respect to its surroundings, it is said to be in motion. An object's position changes over time. There is just one kind of motion, and that is linear motion.
Immediately Speed and Immediately Velocity:Immediately Speed. Instantaneous speed is the velocity of an item at a certain instant in time.
A particle's instantaneous velocity is its speed at any given moment in time or location along its route.
Final velocity: 0 m/s
Initially moving at 15 m/s
Acceleration equals 2 m/s^2.
Arrange to address the time problem:
t = 5 seconds
Use the following to calculate an distance at a constant rate:
Distance is equal to ( Vf +Vo)/ Time
Distance: (0 + 15 m/s)/ 5 sec
d=3-meter distance
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A blimp is travelling above the surface of Jupiter at a height of 3.9km. Assuming g on Jupiter is 24.5N/kg, find the mass of the blimp if its gravitational potential energy store is 2.8MJ.
Explanation:
what does kinetic theory of matter state
neglecting air resistance, after a rock thrown straight up reaches the top of its path and then falls a short distance, its acceleration is group of answer choices more than at the top of its path. the same as at the top of its path. less than at the top of its path.
if a rock is thrown straight up and falls, then its acceleration is the same as at the top of its path and it is equal to g, the gravitational acceleration.
If an object is moving straight vertically, the acceleration is constant along its trajectory, either it moves upward or downward. It is the velocity that changes.
If the object is moving upward, the velocity decreases, until at the top position, the velocity is equal to zero. The acceleration is constant and it is equal to g, the gravitational acceleration.
v(t) = vo - gt
Where:
v(t) is the velocity at time t
vo is the initial velocity
If the object is moving downward, the velocity increases. Again, the acceleration is constant and it is equal to g, the gravitational acceleration.
v(t) = vo + gt
This situation is depicted on the attaches picture.
Hence, if a rock is thrown straight up and falls, then its acceleration is the same as at the top of its path and it is equal to g, the gravitational acceleration.
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determine the minimum coefficient of static friction μs which will allow the drum with fixed inner hub to be rolled up the 15° incline at a steady speed without slipping. what are the corresponding values of the force p and the friction force f?
The ratio of the greatest static friction force (F) between the surfaces in contact before movement starts to the normal force (N) is known as the coefficient of static friction.
Create an inclination plane out of one of the materials, then place a body made of the other material on it to determine the minimum coefficient of static friction between the two. Up until the body begins to slide, steepen the incline. The coefficient of friction is the angle's tangent.
A body of mass m experiences both a horizontal and a vertical component of gravity when you increase the incline.
Applying Newton's Law to each of them right before the body begins to move reveals that Fx = max is the value for the horizontal component, which acts in the x-direction.
The same holds true for the y-axis: Fy = may.
F on one side and umg on the other will exert forces on the body of mass "m."
Write the formula as F-umg=ma.
In the direction F is acting, the force on mass "2m" will be umg. (Observe how the frictional force acts on mass "m" on the left side and mass "2m" on the opposite side.)
Formula: umg=2ma
The acceleration of both bodies should be the same for a no-slip condition; to find the solution, simply substitute the acceleration from equation (2) into number 1.
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What is the name of the seismic wave that is the first to occur during an earthquake? A. S wave B. Surface wave C. P wave
P waves are first to occur during an earthquake.
There are two types of earthquake waves based on the medium of travel.
1.Body waves- these waves travel through the solid part of earth crust.
2.Surface waves- these waves travel on earth's surface.
Body waves are divided into two types of waves i.e., P waves (primary) and S waves (secondary).
1.P waves (primary waves)- these are the fastest seismic waves which travel through the earth crust. P waves are the first waves to reach any location when an earthquake occurs.
2.S waves (Secondary waves)- these waves are second fastest waves after primary waves to reach a location when the earthquake occurs. S waves have half speed than that of P waves.
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3. Alice and Kai were playing air hockey, which is a game where players hit a puck with paddles so the puck slides across
a table. After the game, they were crashing the puck and two different paddles. The puck was the same in both crashes,
but the paddles were different: the red paddle had less mass, while the purple paddle had more mass. Use the
information in the diagram to answer.
In which crash did the puck experience a stronger force? Why?
The crash in which the puck experience a stronger force is Crash 2 because the force on the purple paddle was stronger in this crash, so the force on the puck was also stronger. That is option B.
What is force?Force is defined as the pull or a push that is experienced by an object when it passes through a distance.
According to Newton's second law of motion that states that the force on an object is equal to its mass times its acceleration.
Therefore, force can also be defined as the product of mass and acceleration. That is, F = mass× acceleration.
This shows that force is directly proportional to mass. Therefore increase in the mass of an object will require more force to bring about its movement.
Therefore, the purple paddle has a greater mass with a stronger force leading to a stronger crash.
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Complete question's options:
The puck did not experience a force; only the paddles experienced a force in the crashes.
Crash 2; the force on the purple paddle was stronger in this crash, so the force on the puck was also stronger.
The diagram doesn’t tell you anything about the force on the puck. It only gives information about the force on the paddles.
The puck experienced the same force in both crashes. The paddles changed speed by the same amount in each crash, so the force on the puck was the same each time.
Iridium is a substance found only in asteroids and other space objects. This graph shows the amount of Iridium found in different sediment layers of Earth. They are marked off into 17 sections representing time.
Iridium Levels graph shows Iridium levels in sediment layers. Beginning at sediment layer 1, iridium levels remain between 0 and 5, jumping to a level of 23 between layers 5 and 6, and decreasing to near starting levels at layers 14 through 17.
What most likely happened in sediment layer 5?
A massive volcano erupted, causing global warming and lava flow, which in turn caused mass extinction.
More iridium was produced by space objects and dumped by local factories.
The impact of a space object led to the deposit of a layer of sediment high in iridium.
Fewer impacts lead to a drop in iridium levels and a mass extinction caused by a lack of sunshine.
The most likely thing that happened in the sediment layer 5 is that A. The massive volcano erupted, causing global warming and lava flow, which in turn caused mass extinction.
What is the information about?The element iridium is only present in asteroids and other outer space objects. The amount of iridium present in various Earthly sediment layers is depicted an divided into 17 portions to illustrate the passage of time.
Iridium is a plentiful element in outer space, especially in asteroids. The Alvarez Hypothesis provides support for this response. The most potent nuclear bomb ever exploded only released a fraction of the energy that a large asteroid that struck the earth would have.
Global flames caused by this heat made the earth completely dark.
The creation of a dust cloud was the cause of this obscurity. The lack of sunshine also caused the vegetation to disappear, which in turn led to a global extinction.
In conclusion, the correct option is A.
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8. Which statements are true about why wind tends to blow from over the water to over the land on a sunny day? Highlight all the statements that apply.
A. Air over the water is cooler than air over the land is.
B. The air above the land has greater density.
C. The wind is caused by differences in density.
D. Cool, dense air from over the water flows toward the land, pushing warm air upward.
Wind tends to blow from over the water to over the land on a sunny day because air over the water is cooler than air over the land is, the wind is caused by differences in density and the cool, dense air from over the water flows toward the land, pushing warm air upward. Making option A, C, and D the right answer to the question.
What is sea breeze?
The phenomenon where wind tends to blow from over the water to over the land on a sunny day is referred to as sea breeze.
The heat from the sun heats up the faster than water. Subsequently, air over land heats up faster than air over water, thus air above land becomes lighter causing the pressure to decrease.
In summary, Option B is wrong because the air above the land has a lesser density compared to the air above the water, and this is due to the characteristics of the wind blowing from a higher pressure area to a lower pressure area.
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Is sonic faster than flash
Answer: Flash
Explanation:
sonic can run 767mph
the flash can run roughly 8.3 million mph
Answer:
Sonic.
Explanation:
There is no direct answer, but Sonic leaves a bigger trail behind him than flash and Sonic has a boost and power-ups.
This is easy but help
1. Distance covered 200 Meters
2. Displacement 100 Meters
3. Displacement from starting position 0 Meters
What is Distance?Distance is the sum of an object's movements, regardless of direction. Regardless of an object's starting or ending position, distance can be defined as the amount of ground it has covered.
Displacement: What is it?Displacement refers to the idea that something has moved or been shifted. The term "displacement" refers to a shift in an object's position.
According to the given information;Solution.1 -Natasha sprints 100m and walks back to the starting position 100m. 100m+-100m= - 200m
Therefore, the answer is 200
Solution.2 - Natasha sprints towards finishing line 100m then her displacement is 100m from starting line.
Solution.3 -Natasha sprints 100m towards Finishing line then walked back to starting line then her displacement is
100m - 100m =0 meters
Therefore the answer is 0 meters
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Using energy considerations, calculate the average force a 60. 0-kg sprinter exerts backward on the track to accelerate from 2. 00 to 8. 00 m/s in a distance of 25. 0 m, if he encounters a headwind that exerts an average force of 30. 0 n against him.
Answer:
−102 N
Explanation:
Hope this helps.
What is the minimum wave amplitude amin such that the ant will become momentarily weightless at some point as the wave passes underneath it? assume that the mass of the ant is too small to have any effect on the wave propagation.
The ant will become weightless when the normal force between the string and the ant becomes zero .
What is the explanation?On the center of a tightrope used in circus acts, a sizable ant is standing. A rope has mass for every unit of length. A tightrope walker steps up and down at the end of the tightrope in an attempt to shake the ant off the rope, creating a sinusoidal transverse wave of wavelength and amplitude A.
Assume that g is the gravity-induced acceleration's force. What is the smallest wave amplitude Amin required for the ant to briefly lose its weight while the wave passes beneath it? Assume that the ant's bulk is insufficient to affect the wave's propagation in any way. In terms of Ts,, g, and the smallest wave amplitude, write the expression.
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a 1,900-kg pile driver is used to drive a steel i-beam into the ground. the pile driver falls 4.80 m before coming into contact with the top of the beam, and it drives the beam 13.4 cm farther into the ground as it comes to rest. using energy considerations, calculate the average force the beam exerts on the pile driver while the pile driver is brought to rest.
The average force of the beam expert is 648,365.
What is average force?The force delivered to a body traveling at a specific speed for a specific amount of time is known as the average force. Since it possesses both momentum and direction, it is primarily a vector quantity. It differs between momentum and net force.
Average force is the force exerted by a body moving at a specific speed for a specific amount of time.
mass of pile driver (m) = 1900 kg
distance of pile driver to steel beam (s) = 4.80m
depth of steel driven (d) = 13.4= 0.134 m
acceleration due to gravity (g0 = 9.8 m/s^{2}
calculate the average force exerted on the pile driver by the beam.
from work done = force x distance
work done = change in potential energy of the pile driver
equating the two equations above we have
force x distance = m x g x (s - d)
f x 0.134= 1900 x 9.8 x (4.80- (-0.134))
d = - 0.134because the steel beam went down at we are taking its
initial position to be an origin point which is 0
f = ( 1900x 9.8 x (4.80- (-0.134)) ) ÷ 0.134
=648,365
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a railcar with an overall mass of 72,000 kg traveling with a speed vi is approaching a barrier equipped with a bumper consisting of a nonlinear spring whose force vs. compression law is given by fs
According to Hooke's law, the applied force F equals the displacement or change in length x multiplied by a constant k, or F = kx. The value of k is determined not only by the elastic material, but also by its dimensions and shape.
What is the force definition of compression?When a physical force presses inward on an object, compression force causes it to become compacted (or compressive force). During this process, the relative positions of the object's atoms and molecules change.
F = P/A is the compressive strength formula, where F is the compressive strength (MPa) P=The maximum load (or load until failure) of the material (N) A=A cross section of the load-bearing material's area (mm2).
When the force of compression exceeds an object's ability to withstand it, buckling occurs.
The relationship between force and a measurable property of the objects involved is expressed by a force law. Some interactions can be described by force laws, while others cannot.
There are forces that do not change significantly from one instant to the next and are referred to as constant in time and constant in space.
Hence, Hooke's law states that the applied force F equals the displacement or length change x multiplied by a constant k, or F = kx. The value of k is determined not only by the type of elastic material in question, but also by the temperature.
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3. Find the resultant of the following two displacements 2m at 30⁰ and 4m
at 120⁰. The angles are taken relative to X - axis.
2m
K.
30⁰
4m
600
120°
The resultant of the two displacements 2m at 30⁰ and 4m
at 120⁰ is 93.4 degree.
Describe displacement.Displacement is the process of removing something from its usual location or position and substituting another object in that space.
Given: The sum of the displacements at 30 degrees and 120 degrees, respectively, is 2 meters.
Currently, there are two displacements, which
R1 = 2 cos 30 – 4 cos 60
= 2 x √3 / 2 – 4 x 1 / 2
= √3 - 2
= 1.732 - 2
= - 0.268 m
R2 = 2 sin 30 + 4 sin 60
= 2 x 1/2 + 4 x √3 / 2
= 1 + 2 √3
= 1 + 2 (1.732)
= 1 + 3.464
= 4.464 m
Now R = √R 1^2 + R2^2
= √(-0.268)^2 + (4.464)^2
= √0.0718 + 19.927
= √19.999
= 4.472 m
Now tan Q = R 2 / R1
= 4.464 / - 0.268
= - 16.656
Or Q = - 86.6 degree
Now the outcome will be 180 – 86.6 = 93.4 degree
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Give an example of periods (periodic table)
Answer:
helium, hydrogen, nitrogen, oxygen,iron,uranium,
Explanation:
there are 118 elements but here are some
URGENT!! ILL GIVE
BRAINLIEST! AND 100 POINTS
The chemical equation shown below is not balanced (it does not follow the Law of Conservation of Matter).
The answer is 2 because the Hydrogen atom on the right needs 2 to balance with the one on the left
If you apply a force of 10 N to a box and push it 10 min 10 s. how much power didyou deliver?
10 watt power will be delivered to push the box for 10 min 10 seconds by applying force of 10N to a box .
What is power and how much is delivered to push the box for 10 minutes 10 second?Power is the energy we exert per unit time. Also power is the product of voltage supply and current.Though power have lots of definitions in its own way , here we talk about the power which is the work unit time.Given is the force which is 10 N and the time that is 10 min 10 second .Now applying the formula P= work/time , that is 100Nm/10s = 10 watt.Work have been calculated as the product of force and displacement = 10N X10m =100Nm.To know more about power visit:
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This is the 6th question. other 5 questions in a different one. will mark brainliest. need asap. thank you
The acceleration of an object is directly proportional to the force applied and inversely proportional to its mass.
If the same force is used to move all four masses, they will experience the same different accelerations since their masses differ.
According to Newton's second law, the greater the force used to throw the ball, the greater the ball's acceleration.
If forces, F, are equal, the acceleration of the wagons should be different.
If force, F, is the same for both cars, then you know the mass of Car A is less than the mass of Car B.
To move the wagons at the same speed you must use a much greater force, F on the bottom wagon because it has a greater overall mass.
What is the relationship between the force, mass, and acceleration of an object?According to Newton's second law of motion, the acceleration of an object is directly proportional to the applied force and inversely proportional to the mass of the object.
Therefore, the greater the mass of an object, the greater will be the force required to produce the acceleration as in an object of smaller mass.
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based on law of conservation of mass: when you burn a candle, all that remains is a small puddle of wax. the puddle of wax has less mass than the original candle. the rest of the original candle’s mass was :
The rest of the original candle’s mass was changed to gases.
What is law of conservation of mass?The law of conservation of mass states that during a chemical reaction in an enclosed medium that there is neither generation or lost if it's mass but that it can be transformed.
Mass is defined as the scalar quantity that defines the quantity of matter found in a particular component or object.
The candle is made up of carbonic compounds that decreases in mass to form a puddle of wax when burnt.
The original mass of the candle was not lost but while some where converted to puddle of wax the rest escaped as gas to the atmosphere.
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