The principle of equivalence states that
A) the laws of physics are the same in all inertial frames of reference.
B) the speed of light is the same in any frame of reference.
C) clocks that move relative to one another keep time at different rates.
D) the length of an object depends on its speed relative to a given observer.
E) all physical experiments conducted in a uniform gravitational field and in an accelerated frame of reference give identical results.
E
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Which of the following is true of Mars's atmosphere?
A) It is mostly composed of carbon dioxide. B) It is mostly composed of nitrogen. C) It is as inhospitable as the Moon's atmosphere. D) It is as dense as Venus's atmosphere.
When light enters a denser medium and is refracted,
a. the wavelength is unchanged. b. the wave speed increases. c. the frequency is unchanged. d. the wavelength increases.
The position of an object is given as a function of time as x(t) = (3.00 m/s)t + (2.00 m/s2)t2. What is the displacement of the object between t = 4.00 s and t = 5.00 s?
A) 8.00 m B) 5.00 m C) 21.0 m D) 65.0 m E) 44.0 m
The only metal that does not oxidize is _________.
Fill in the blank(s) with the appropriate word(s).