Starting from rest, a wheel undergoes constant angular acceleration for a period of time T. At which of the following times does the average angular acceleration equal the instantaneous angular acceleration?
a. 0.50T
b. 0.67T
c. 0.71T
d. all of the above
d
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Say that our Moon was Full on May 1, 2007. When was the next First Quarter phaseafter that Full Moon?
a) May 15 b) June 1 c) May 22 d) May 8 e) May 4
Doubling the temperature of a black body will double the total energy it radiates
Indicate whether the statement is true or false
What is the focal length of a pair of contact lenses that will allow a person with a near point of 125.0 cm to read a newspaper held 25.0 cm from his eyes?
A) -100 cm B) -31.3 cm C) 10.2 cm D) 20.8 cm E) 31.3 cm
The temperature of a quantity of ideal gas in a sealed container is increased from 0°C to 273°C. What happens to the rms speed of the molecules of the gas as a result of this temperature increase?
a. It does not change since rms speed is independent of temperature. b. It increases but it less than doubles. c. It doubles. d. It quadruples.