Exhibit 4-2Newton approximated motion in a circle as a series of linear motions, as in the polygon below.
Assume that the particle moves at constant speed vA from A to B, and at constant speed vB from B to C.Use this exhibit to answer the following question(s).
Refer to Exhibit 4-2. The direction of the change in velocity, 
, at point B, is shown by the arrow in
A.
B.
C.
D.
E.
Answer: C
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Of the following which might NOT vanish over one cycle of a cyclic process?
A. the work done by the substance minus the energy absorbed by the substance as heat B. the change in the pressure of the substance C. the energy absorbed by the substance as heat D. the change in the volume of the substance E. the change in the temperature of the substance
At t = 0, a particle is located at x = 25 m and has a velocity of 15 m/s in the positive x direction. The acceleration of the particle varies with time as shown in the diagram. What is the velocity of the particle at t = 5.0 s?
?
?
A. +15 m/s B. ?15 m/s C. +30 m/s D. 0 E. ?1.2 m/s
A spaceship carrying a light clock moves at a speed of 0.960c relative to an observer on Earth
If the clock on the ship advances by 1.00 s as measured by the space travelers aboard the ship, how long did that advance take as measured by the observer on Earth? A) 0.96 s B) 1.2 s C) 2.6 s D) 3.6 s E) 5.8 s
When the intensity of the light is increased in a photoelectric effect experiment, the energy of the emitted electrons
a. increases b. decreases c. stays the same d. becomes more quantized e. becomes less quantized