When an elevator is accelerating upward, the frequency of a pendulum inside
A) increases.
B) decreases.
C) doesn't change.
Answer: A
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Velocity Addition: A spaceship leaves Earth at a steady forward speed of 70% the speed of light. How fast relative to the ship must the spaceship launch a shuttlecraft in the forward direction so that it will be moving away from Earth at 98.7% the speed of light?
A. 0.91c B. 0.97c C. 0.93c D. 0.99c E. 0.84c
How does a comet's orbital angular momentum vary over its orbit?
A) Its angular momentum is greatest when the comet is closest to the Sun. B) Its angular momentum is greatest when the comet is farthest away from the Sun. C) Its angular momentum is the same throughout its orbit.
The speedometer of an automobile reads
A) average speed. B) instantaneous speed. C) accelerated speed.
When an unstable Lutetium nucleus undergoes beta decay, the nucleus formed is that of
a. Lutetium. b. Tantalum. c. Ytterbium. d. Thulium. e. Hafnium.