Which characterizes the main result of the Michelson-Morley experiment?
a. verified the existence of ether
b. involved measuring the speed of sound from a moving source
c. detected no difference in the speed of light regardless of speed of the source relative to observer
d. was designed purposely to verify Einstein's theory of relativity
c
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A wire bearing current of 1.25 A crosses a region in which there is a uniform B field in the +y direction. The wire is inclined at an angle of 75 degrees above the +x direction. What is the magnitude of the force on the wire, if the magnetic field region spans 15 cm in the x direction?
A. 0.19 N B. 0.70 N C. 0.18 N D. 0.05 N
A total solar eclipse occurred in Wolf Point, Montana, on Feb. 26, 1979 . When was (will) an eclipse like this eclipse next (be) visible again in Montana? Hint: A Saros is 18 years and 11 1/3 days. Twice a Saros is 36 years 22 2/3 days. Three times a Saros is 56 years 34 days. So the best choice answer of these listed will be late ______
a. August of 1979 b. March of 2033 c. March of 1997 d. March of 1979 e. January of 2000
the greater average kinetic energy per molecule,
A. The quantity is greater for gas A. B. The quantity is greater for gas B. C. The quantity is the same for both gases. D. One does not know enough to compare the quantities.
In an AC series circuit the capacitive reactance is 217 ? and frequency is 56 Hz. What is the capacitance?
a. 2.62E–5 F b. 8.23E–5 F c. 1.31E–5 F d. 1.85E–5 F e. 3.71E–5 F