A beam splitter in a Michelson interferometer is
A)
an extremely sharp knife edge.
B)
two transparent pipes.
C)
a half-silvered mirror.
D)
made of two mirrors.
E)
made of three mirrors.
C
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A car traveling at 4.0 m/s has a constant acceleration of 2.0 
After 3.0 seconds, the average velocity during the acceleration is
A. 5.0 m/s. B. 7.0 m/s. C. 9.0 m/s. D. 11 m/s. E. 13.
When light passes at an angle to the normal from one material into another material in which its speed is higher,
a. it is bent toward the normal to the surface. b. it always lies along the normal to the surface. c. it is unaffected. d. it is bent away from the normal to the surface.
A bullet is fired from ground level with a speed of 150 m/s at an angle 30.0° above the horizontal at a location where g = 10.0 m/s2
What is the range of the bullet (horizontal distance from the starting point to the point where it lands on the ground)? A) 1130 m B) 150 m C) 13.0 m D) 1950 m E) 975 m
The tension in each of two strings is adjusted so that both vibrate at exactly 666 Hz. The tension in one of the strings is then increased slightly. As a result, six beats per second are heard when both strings vibrate
What is the new frequency of the string that was tightened? A) 672 Hz B) 660 Hz C) 669 Hz D) 663 Hz