Angular Quantities: Through how many degrees does a 33 rpm turntable rotate in 0.32 s?
A. 63°
B. 35°
C. 46°
D. 74°
Answer: A
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Velocity Addition: Two spaceships approach each other along a straight line at a constant relative velocity of 0.9880c as measured by the captain of one of the ships. An observer on Earth is able to measure the speed of only one of the ships as 0.9000c. From the point of view of the observer on Earth, what is the speed of the other ship in terms of the speed of light?
Fill in the blank(s) with the appropriate word(s).
The attractive force a 70 kg person exerts on Earth is much, much smaller than the force Earth exerts on the person.
a. true b. false
In order to understand the concept of temperature it is necessary to understand
A. the zeroth law of thermodynamics. B. the first law of thermodynamics. C. the second law of thermodynamics. D. all of the above. E. only (b) and (c) above.
In an AC series circuit the capacitive reactance is 253 W and frequency is 100 Hz. What is the capacitance?
a. 6.29 mF c. 50.0 mF b. 8.0 mF d. 3.2 mF