The acceleration of a ball as it rolls down a ramp is 4 m/s2 . The ball is referred to 2 s after it starts to roll. The velocity acquired after starting from rest in m/s is
a. 0.
b. 2.
c. 4.
d. 8.
e. 16.
d
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A light source blinks with a certain frequency in its own frame of reference, and the speed of light in that frame is c. When the light source approaches you, you observe an increase in
A) both speed of light and frequency of blinking. B) speed of light, but not frequency of blinking. C) frequency of blinking, but not speed of light.
The compact disc stores information by means of
A) holography. B) pits and lands. C) Compton scattering. D) stimulated absorption. E) the photoelectric effect.
The solar corona is much cooler than the Sun's surface; hence we must wait for a total solar eclipse to glimpse it with the naked eye
Indicate whether the statement is true or false
The volume holding 0.63 mole of an ideal gas is compressed to 1/4 of its original volume by a piston. At the same time the pressure of the gas triples. If the original absolute temperature of the gas was T, that is the new temperature after compression?
a. 4/3T b. 3/4T c. 0.63(3/4T) d. 0.63(4/3T)