Mastery Quiz

1		An inertial frame of reference is a frame of reference that is
			A)	undergoing an acceleration
			B)	is not undergoing an acceleration
			C)	moves at the speed of light
			D)	is always at rest
2		The Michelson-Morley experiment
			A)	proved that there is no luminiferous ether
			B)	proved that there is a luminiferous ether
			C)	showed that a medium is necessary for the transmission of light
3		According to Einstein's second postulate of special relativity, the velocity of light in a vacuum
			A)	is the same for all frames of reference
			B)	depends upon the velocity of the source
			C)	is the same for all inertial frames of reference
			D)	is too great to be measured
4		According to Einstein's theory of special relativity, compared to stationary clocks moving clocks run
			A)	slower
			B)	at the same rate
			C)	faster
5		Proper time interval is the
			A)	time kept by the observatory in Greenwich, England
			B)	time measured by any observer with a calibrated clock
			C)	elapsed time between two events measured in a frame of reference in which the two events occur at the same time
			D)	elapsed time between two events measured in a frame of reference in which the two events occur at the same point in space
6		According to Einstein's theory of special relativity, a moving observer measures
			A)	a shorter
			B)	a longer
			C)	the same length of an object as a stationary observer
7		Rest-mass energy is calculated as
			A)	E0 = m/c2
			B)	E0 = mc
			C)	E0 = mc2
			D)	E>0 = m/c
8		The relativistic factor γ is written as
			A)	(1 - v2/c2)-1/2
			B)	(1 - v2/c2)1/2
			C)	(1 - v2/c2
			D)	v/c
9		Relativistic effects are important
			A)	at high velocities
			B)	at low velocities
			C)	at all velocities
10		General relativity deals with
			A)	stationary reference frames
			B)	reference frames moving at constant velocities
			C)	accelerated reference frames