The image shows a pendulum that is released from rest at point A. Which energy transformation is correct? From A to C, kinetic energy is transformed into gravitational potential energy. From C to D, kinetic energy is transformed into gravitational potential energy. From C to E, gravitational potential energy is transformed into kinetic energy. From D to E, gravitational potential energy is transformed into kinetic energy.
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Answer:
Partially: From C to D, kinetic energy is transformed into gravitational potential energy and From D to E, gravitational potential energy is transformed into kinetic energy
Explanation:
What happens in this pendulum is that at point A, there's only gravitational potential energy (no velocity=no kinetic energy)
At point C, it has maximum speed since all of the potential energy is transformed into kinetic energy (no potential gravitational energy at this point)
At point E, it is the same as at point A. (no kinetic energy)
At the intermediate points (B and D) there are both kinetic and potential energy. At point B the kinetic energy is increasing and at point D it is decreasing.
Now let's see each case:
- From A to C, kinetic energy is transformed into gravitational potential energy: It is actually the opposite, so no.
- From C to D, kinetic energy is transformed into gravitational potential energy: Yes, but not all of it is transformed since it still has kinetic energy that allows it to get til point E.
- From C to E, gravitational potential energy is transformed into kinetic energy: No, it is the opposite.
- From D to E, gravitational potential energy is transformed into kinetic energy: Yes, but not all of it, since at point D it also has kinetic energy.
The kinetic energy is transformed into gravitational potential energy from point C to B. But complete transformation is not happening. Thus, the statement is somehow correct.
The analysis of pendulum is given as follows:
At point A, there's only gravitational potential energy and no kinetic energy, because the pendulum is at rest at A. At point C, it has maximum speed since all of the potential energy is transformed into kinetic energy. Therefore, at this point there is only kinetic energy and no potential energy. At point E, it is the same as at point A, but in opposite side. So, at this point there is no kinetic energy. At points B and D there are both kinetic and potential energy. At point B the kinetic energy is increasing and at point D it is decreasing.
Now as per the given statements:
From A to C, kinetic energy is transformed into gravitational potential energy. It is actually the opposite. Thus, the statement is incorrect. From C to D, kinetic energy is transformed into gravitational potential energy. At this interval, the kinetic energy is converting into potential energy but the conversion is not complete. Thus, the statement is somehow correct. From C to E, gravitational potential energy is transformed into kinetic energy. At this point, the kinetic energy is converting into the potential energy. Thus, the statement is incorrect. From D to E, gravitational potential energy is transformed into kinetic energy. This statement incorrect because there is conversion of kinetic energy into potential energy.Thus, we can conclude that from C to D, the kinetic energy is transformed into gravitational potential energy, but the transformation is not complete. Hence, statement (B) is correct.
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Related Questions
What is the kinetic energy of a 72.0-kg sky diver falling at a terminal velocity of 79.0 m/s? show your work. round your answer to the thousands place and include the units with your answer?
Answers
Substitution follows:
Ke=1/2mv^2
Ke=1/2(72)((79)^2)
Ke=1/2(449,352)
Ke=224,676 or 225,000
The kinetic energy of the diver is equal to 225,000 kg•m/s^2, 225,000 Joules, or 225 kilojoules (all the same value).
Final answer:
The final kinetic energy of the 72.0-kg skydiver falling at a terminal velocity of 79.0 m/s is 226,584 Joules, rounded to the thousands place as 227,000 Joules.
Explanation:
Kinetic energy (KE) can be calculated using the formula KE = 1/2 × mass × velocity^2. In this case, the mass (m) is 72.0 kg and the velocity (v) is 79.0 m/s. Plugging these values into the formula yields KE = 1/2 × 72.0 kg × (79.0 m/s)^2, which calculates to approximately 226,584 Joules. As instructed, rounded to the nearest thousand, the kinetic energy is given as 227,000 Joules, including the units which are crucial for expressing energy. This demonstrates the considerable amount of energy a body can have due to its motion, and emphasizes the importance of accurate calculations when dealing with physical quantities like kinetic energy.
The periodic table lists all the compounds on Earth.
True or False?
Answers
Which type of mirror has a flat surface?
Answers
the overall charge of the nucleus is _____
a. positive
b. negative
c. neutral
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Let me know if you need anything else. :)
~ Dotz
Taking into account the constitution of an atom, the correct answer is option a. the charge of the nucleus of the atom is positive.
Constitution of an atomThe smallest component of ordinary matter with the characteristics of a chemical element is an atom, which consists of a nucleus where neutrons and protons meet, and energy levels where electrons are located.
In other words, The protons and neutrons that constitute the atomic nucleus are located in the nucleus of the atom, while the orbitals, or peripheral region, is where the electrons are located.
The neutron is an electrically neutral subatomic particle, while the proton has a positive electrical charge. Electrons have a negative charge, and are attracted to protons through electromagnetic force.
Overall charge of nucleus of an atomIn summary, since in the center of the atom there are protons with a positive charge and neutrons with a neutral charge, the charge of the nucleus of the atom is positive.
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The maximum gauge pressure in a hydraulic lift is 18.0 atm what is the largest size vehicle
Answers
The maximum gauge pressure in a hydraulic lift is 18.0 atm, the largest size vehicle (in terms of weight) that the hydraulic lift can lift is approximately 112,336.84 kg.
We must weigh the weight of the vehicle and the pressure imposed by the lift to find the largest size vehicle that can be lifted by a hydraulic lift with a maximum gauge pressure of 18.0 atm.
r = d / 2
r = 28.0 cm / 2
r = 14.0 cm
r = 0.14 m
A = π *[tex]r^2[/tex]
A = π * [tex](0.14 m)^2[/tex]
A ≈ 0.0616 [tex]m^2[/tex]
1 atm = 101,325 Pa
18.0 atm = 18.0 * 101,325 Pa
≈ 1,823,850 Pa
Substituting the values into the formula:
Force = (1,823,850) * (0.0616) ≈ 112,336.84 N
Now, we can calculate the weight (W) of the largest vehicle that can be lifted using the formula:
Weight = Force
Thus, the largest size vehicle (in terms of weight) that the hydraulic lift can lift is 112,336.84 kg.
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Your question seems incomplete, the probable complete question is:
The maximum gauge pressure in a hydraulic lift is 18.0 atm what is the largest size vehicle "What is the largest size vehicle (kg) it can lift if the diameter of the output line is 28.0 cm? "
A block of mass m = 4.4 kg slides from left to right across a frictionless surface with a speed 9.2 m/s It collides in a perfectly elastic collision with a second block of mass M that is at rest. After the collision, the 4.4-kg block reverses direction, and its new speed is 2.5 m/s What is V, the speed of the second block after the collision?
A)6.4 m/s
B)5.1 m/s
C)5.9 m/s
D)7.2 m/s
Answers
Answer:
option (A)
Explanation:
m = 4.4 kg, u = 9.2 m/s, v = - 2.5 m/s
M =
U = 0
V = ?
By use of conservation of momentum
mu + M x 0 = mv + MV
4.4 x 9.2 + 0 = 4.4 x (- 2.5) + M x V
40.48 + 11 = M V
MV = 51.48 ......(1)
By using the conservation of kinetic energy
0.5 x m x u^2 + 0 = 0.5 x m v^2 + 0.5 x M V^2
4.4 x 9.2 x 9.2 = 4.4 x 2.5 x 2.5 + MV^2
372.416 - 27.5 = MV^2
MV^2 = 344.9 ...... (2)
Dividing equation (2) by equation (1)
V = 6.7 m/s
So, the correct option is (A)
Using conservation of momentum and kinetic energy, we calculate that the speed of the second block after the collision is approximately 6.4 m/s. Therefore, the correct answer is A) 6.4 m/s.
Given a perfectly elastic collision between two blocks, we use the principles of conservation of momentum and kinetic energy.
Step-by-Step Solution:
Calculate the initial momentum:Initial momentum, p_initial = m1 * v1_initial + m2 * v2_initial = 4.4 kg * 9.2 m/s + M * 0 = 40.48 kg*m/sCalculate the final momentum:
Final momentum, p_final = m1 * v1_final + m2 * v2_final = 4.4 kg * (-2.5 m/s) + M * V = -11 kg*m/s + M * VSet initial and final momentum equal as momentum is conserved:
40.48 = -11 + M * VFor kinetic energy conservation, use:
Initial kinetic energy, KE_initial = 0.5 * 4.4 * (9.2)² = 185.68 J
Final kinetic energy, KE_final = 0.5 * 4.4 * (2.5)² + 0.5 * M * V² = 13.75 J + 0.5 * M * V²Since kinetic energy is conserved:
185.68 = 13.75 + 0.5 * M * V²Solve simultaneously for M and V. Given that M is missing from the statement, ignore mass to find:
40.48 + 11 = M * V
51.48 = M * V and 185.68 - 13.75 = 0.5 * M * V²
171.93 = 0.5 * M * V²
343.86 = M * V²
Substituting from the previous:
343.86 = 51.48 * V
V = 6.68 m/s
Using these steps, we calculate that the speed of the second block after the collision, V, is approximately 6.4 m/s. Therefore, the correct answer is A) 6.4 m/s.
What is the kinetic energy of a 1500 kg object moving at a velocity of 10 m/s?
Answers
Plug in the correct numbers into the variables!
KE = 1500 kg x 10 m/s ^2 / 2
Square the 10 m/s!
KE = 1500 kg x 100 m/s / 2
Multiply!
KE = 150,000 / 2
Divide!
KE = 75,000 Newton-meters or Joules!
The kinetic energy of a 1500 kg object moving at a velocity of 10 m/s is 75000 Joules.
Explanation:The kinetic energy of an object can be calculated using the formula KE = 1/2 * mass * velocity^2. Plugging in the given values for the mass (1500 kg) and velocity (10 m/s):
KE = 1/2 * 1500 * (10)^2
Simplifying the equation:
KE = 1/2 * 1500 * 100
KE = 75000 J
Therefore, the kinetic energy of the object is 75000 Joules.
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when you push on a wall and the wall does not move, you are demostrating newtons first law of motion TRUE OR FALSE
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What kind of thermal energy that flows between objects due to a difference in temperature?
Answers
________ describes the unique sound quality or tone color of a sound.
Answers
How is refraction different from reflection?
A. Refraction occurs only within the same medium
B. The light travels at the same speed as before it was
C. The angle of refraction is measured from the flat surface rather than from the normal
D. The angle of refraction is not necessarily equal to the angle of incidence
Answers
of incidence, whereas the angle of reflection always is.
The refraction is different from reflection as: the angle of refraction is not necessarily equal to the angle of incidence.
What is refraction?Refraction is defined as the shift in a wave's direction when it travels from one medium to another.
Although light refraction is one of the most frequently seen phenomena, refraction can also occur with sound and water waves. We can use optical tools like lenses, prisms, and magnifying glasses thanks to refraction. We can focus light on our retina because of the refraction of light, which is another benefit.
What is reflection?Reflection is the phenomenon of light rays returning to the source after striking an obstruction. It resembles the way a ball bounces when we toss it on a hard surface.
Some of the light rays that strike an object are reflected, some of them travel through it, and the remainder are absorbed by the object.
Mirrors are objects that completely reflect all light rays that strike them. Mirrors therefore demonstrate the phenomenon of light reflection.
Hence, the refraction is different from reflection as: the angle of refraction is not necessarily equal to the angle of incidence.
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The diagram shows a charge moving into an electric field. The charge will most likely leave the electric field near which letter?
Answers
In fact, the electric field lines goes from a positive charge to a negative charge. This means that a positive charge would move in the same direction of the field lines, while a negative charge would move in the opposite direction of the field lines. In this problem, we have a negative charge, which is deflected downward (in the opposite direction of the field lines), so it will leave the electric field near position Y.
Answer:
Y
Explanation:
next to Y
Bettina spoke into a microphone during the school play to increase the sound of her voice so the audience could hear her speak. The loudness of Bettina’s voice was changed by what type of energy?
Answers
C.) Electric Energy
A 90-g aluminum calorimeter contains 390 g of water at a temperature of 20C. Then a 160 g piece of metal, initially at 305C is added to the calorimeter. The metal, water, and calorimeter reach an equilibrium temperature of 32 C. What is the specific heat capacity of the metal? The specific heat capacity of aluminum is 910 J/kg ∙ K, and of water is 4190J/kg*K.
430 J/kg · K
470 J/kg · K
350 J/kg · K
310 J/kg · K
Answers
Heat lost by metal = heat is gained by alu + heat gain by water.
Sw × 0.160 × (305-32) = 0.090 × (32 -20) ×
910 + 0.390 × ( 32-20) × 4186
sw = 470 J/kg ×k
the specific heat for metal is 470J/kg×k
Answer:
470 J/Kg.K
Explanation:
Let c be the specific heat capacity of metal.
According to the principle of caloriemetry
Heat lost by the hot body = Heat gained by the cold body
Heat lost by the aluminium = Heat gained by metal + calorimeter
mass of Aluminium x specific heat of Aluminium x rise in temperature + mass of water x specific heat of water x rise in temperature = mass of metal x specific heat of metal x fall in temperature
0.09 x 910 x (32 - 20) + 0.390 x 4190 x (32 - 20) = 0.16 x c x (305 - 32)
982.8 + 19609.2 = 43.68 c
c = 471.4 J/Kg.K
c = 470 J/Kg.K (nearly)
Which half reaction shows both the conservation of mass and the conservation of charge?
Answers
On the other hand, charge conservation is the principle that the total electric charge in an isolated system never changes. The net quantity of electric charge, the amount of positive charge minus the amount of negative charge in the universe, is always conserved. The same reasoning is applied in this case, so the only thing is happening in c) and d) is a charge transfer.
So, the reaction for both the conservation of mass and the conservation of charge is to "transfer" something (matter or charge).
When you drop a stone into a pool water waves spread out from where the stone landed. why answers?
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When light from the Sun strikes the surface of the Earth, this light is absorbed by the ground. The ground, in turn, emits infrared light—which is actually invisible to human eyes—back into the air. What is the effect of this infrared light being released into the air from the ground? A. It makes the air brighter. B. It warms the air. C. It harms the ozone layer. D. It makes the air appear blue.
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I have concluded to this answer because all the others make no sense. You can outlaw A. and D. because the air is clear and does not have color. And Infrared light does not affect the ozone from my knowledge.
Which of these is true about a magnetic field?
It has the same magnitude at every point.
It points in the same direction as it would make a compass point.
It has a magnitude at each point but no specific direction.
It has the same direction at every point.
Answers
What is the frequency corresponding to a period of 4.31 s? answer in units of hz?
Answers
The frequency corresponding to a period of 4.31 seconds is approximately 0.232 Hz, calculated using the formula for frequency and period (f = 1/T).
Explanation:The subject of this query is on the concept of frequency in relation to period, which is a topic studied in Physics. The relationship between frequency (f) and period (T) is given by the equation f = 1/T. In this context, the given period T is 4.31 seconds.
Applying this to the equation results in f = 1/4.31 Hz. Therefore, the frequency corresponding to a period of 4.31 seconds is approximately 0.232 Hz.
The SI unit for both frequency and period are inverse to each other-- with frequency being in Hertz (Hz), defined as oscillations per second, and period being in seconds, defined as the time for one complete cycle of oscillation.
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In a compression or longitudinal wave, the _____________is a point on a medium through which a longitudinal wave is traveling that has the maximum density.
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it is a. compression
A 1.00 kg object is attached to a horizontal spring. the spring is initially stretched by 0.500 m, and the object is released from rest there. it proceeds to move without friction. the next time the speed of the object is zero is 0.100 s later. what is the maximum speed of the object?
Answers
[tex]T=2 t = 2 \cdot 0.100 s = 0.200 s[/tex]
Which means that the frequency is
[tex]f= \frac{1}{T}= \frac{1}{0.200 s}=5 Hz [/tex]
and the angular frequency is
[tex]\omega=2 \pi f = 2 \pi (5 Hz)=31.4 rad/s[/tex]
In a spring-mass system, the maximum velocity of the object is given by
[tex]v_{max} = A \omega[/tex]
where A is the amplitude of the oscillation. In our problem, the amplitude of the motion corresponds to the initial displacement of the object (A=0.500 m), therefore the maximum velocity is
[tex]v_{max} = A \omega = (0.500 m)(31.4 rad/s)= 15.7 m/s[/tex]
The maximum speed of the object is 15.70 m/s
Given data:
The mass of object attached to horizontal spring is, m = 1.00 kg.
The stretching distance is, x = 0.500 m.
Time interval is, t = 0.100 s.
The linear velocity of spring - mass system is given as,
[tex]v = x \times \omega[/tex]
Here, [tex]\omega[/tex] is an angular speed. Solving as,
[tex]v = x \times (2 \pi f )\\\\v = x \times (\dfrac{2 \pi}{T} )[/tex]
Time period (T) for complete oscillation is, [tex]T = 2t[/tex].
[tex]v = x \times (\dfrac{2 \pi}{ 2 t} )\\v = 0.500 \times (\dfrac{ \pi}{0.100} )\\v =15.70 \;\rm m/s[/tex]
Thus, the maximum speed of the object is 15.70 m/s.
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When you look at yourself in a pocket mirror and then hold the mirror farther away, you see less of yourself more of yourself the same of yourself?
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30 POINTS!
The slope of the Position versus Time Graph represents the object's
A) acceleration
B) displacement
C) position
D) velocity
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Answer:
D
Explanation:
VELOCITY!
The slope of the Position versus Time Graph represents the object's velocity.
Thus, The acceleration of an object is the amount by which its velocity changes. Similar to velocity, acceleration is a vector quantity, which means it has a magnitude and a direction.
According to Newton's second law of motion, it is the product of the force acting on an object divided by the mass of the object.
The speed and direction of an object's motion are measured by its velocity. In kinematics, the area of classical mechanics that deals with the motion of bodies, velocity is a fundamental idea.
Thus, The slope of the Position versus Time Graph represents the object's velocity.
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99 POINT QUESTION- Answer Marked Brainliest- PLEASE HELP
A car travels at a constant velocity of 20.0 meters/second for 15 seconds. What is the power of the car if the initial force applied to it was 95 newtons?
A. 6.5 × 10^2 watts
B. 1.3 × 10^3 watts
C. 2.6 × 10^3 watts
D. 1.9 × 10^3 watts
Answers
Hello!
I believe the answer is D) 1.9 × 10^3 watts.
I hope it helps!
Refraction occurs when light crosses the boundary between one material and another material. what is the primary cause for this refracting of light upon crossing a boundary?
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Three asteroids have exactly the same amount of mass. The distance from asteroid A to asteroid B is 300 km, the distance from asteroid B to C is 400 km, and the distance from C to A is 100 km. Between which two asteroids would the gravitational force be the largest?
A). Between asteroid A and B.
B). Between asteroid B and C.
C). Between asteroid C and A.
D). The gravitational force between each pair of asteroids would be the same.
Answers
F = GMm/r^2
Where;
F = Gravitational force, G = Gravitational constant, M & m = masses of two bodies which are constant in this case, and r = distance between the masses.
It can be seen that F α 1/r^2.
Therefore, the far the two masses are from each other, the smaller the gravitational force and vice versa.
It is indicated that:
AB = 300 km
BC = 400 km
CA = 100 km
Therefore,
gravitational force will largest between C and A due to smaller distance between them.
Sonar equipment sends sound wastes into deep water and measures what
Answers
What can you do with the Freudian tools for analysis? You can decode the manifest content in your dreams. You can scrutinize a person's fears. You can protect latent content. You can figure out the non-projected dream content.
Answers
The answer is : you can decode the manifest content in your dreams.
Scientists can calculate the distance from the seismograph station to the focus using
a. the difference in arrival times of P and surface waves.
b. the difference in arrival times of P and S waves.
c. the difference in arrival times of S and surface waves.
d. None of the above.
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During a collision between a photon and an electron, there is conservation of