Quiz
AP Physics B
Perguntas do quiz (11)
1A ball is thrown off of a 25-m-high cliff. Its initial velocity is 25 m/s, directed at an angle of 53° above the horizontal. How much time elapses before the ball hits the ground? (sin 53° = 0.80; cos 53° = 0.60; tan 53° = 1.3)
- A3.0 s
- B5.0 s
- C7.0 s
- D9.0 s
- E11.0 s
2The velocity–time graph above represents a car on a freeway. North is defined as the positive direction. Which of the following describes the motion of the car?
- AThe car is traveling north and slowing down
- BThe car is traveling south and slowing down
- CThe car is traveling north and speeding up
- DThe car is traveling south and speeding up
- EThe car is traveling northeast and speeding up
3A free-body diagram includes vectors representing the individual forces acting on an object. Which of these quantities should NOT appear on a free-body diagram?
- Atension of a rope
- BMass times acceleration
- CKinetic Friction
- DStatic Friction
- EWeight
4An object rolls along level ground to the right at constant speed. Must there be any forces pushing this object to the right?
- AYes: the only forces that act must be to the right
- BYes: but there could also be a friction force acting to the left
- CNo: No forces can act to the right
- DNo: While there can be forces acting, no force MUST act
- EThe answer depends on the speed of the object
5A satellite orbits the moon in a circle of radius R. If the satellite must double its speed but maintain a circular orbit, what must the new radius of its orbit be?
- A2 R
- B4 R
- C1/2 R
- D1/4 R
- ER
6A strong hurricane may include 50 m/s winds. Consider a building in such a hurricane. If the air inside the building is kept at standard atmospheric pressure, how will the outside air pressure compare to the inside air pressure?
- AOutside pressure will be the same
- BOutside pressure will be about 2% greater
- COutside pressure will be about 2% lower
- DOutside pressure will be about twice inside pressure
- EOutside pressure will be about half inside pressure
7At room temperature, the rms speed of nitrogen molecules is about 500 m/s. By what factor must the absolute temperature T of the Earth change for the rms speed of nitrogen to reach escape velocity, 11 km/s?
- AT must decrease by a factor of 50
- BT must increase by a factor of 22
- CT must increase by a factor of 50
- DT must increase by a factor of 200
- ET must increase by a factor of 500
8On which of the following physics principles does Kirchoff 's loop rule rest?
- AConservation of charge
- BConservation of Mass
- CConservation of Energy
- DConservation of Momentum
- EConservation of angular momentum
9The circular wire shown carries a current I in the counterclockwise direction. What will be the direction of the magnetic field at the center of the wire?
- Ainto the page
- Bout of the page
- Cdown
- Dup
- Ecounterclockwise
10A traveling wave passes a point. At this point, the time between successive crests is 0.2 s. Which of the following statements can be justified?
- AThe frequency is 5 Hz
- BThe wavelength is 5 m
- CThe velocity of the wave is 5 m/s
- DThe wavelength is 0.2 m
- EThe wavelength is 68 m
11The state of a gas in a cylinder is represented by the PV diagram shown. The gas can be taken through either the cycle ABCA, or the reverse cycle ACBA. Which of the following statements about the work done on or by the gas is correct?
- AIn both cases, the same amount of net work is done by the gas
- BIn both cases, the same amount of net work is done on the gas
- CIn cycle ABCA net work is done on the gas; in cycle ACBA the same amount of net work is done by the gas
- DIn cycle ABCA net work is done by the gas; in cycle ACBA the same amount of net work is done on the gas
- EIn both cycles net work is done by the gs, but more net work is done by the gas in ACBA than in ABCA
Informações
- Descrição
- Practice quizzes for AP Physics B classes and exams
- Autor
- Usuário eliminado
- Idioma
- English
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- 34
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- Criado em 27 set 2016 · atualizado em 28 set 2016
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