Most of the Rocky Mountains, in the western United States, lie in the ______________ Standard Time zone

a. Mountain
b. Eastern
c. Central
d. Pacific


a

Physics & Space Science

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How do astronomers infer the presence of magnetic fields in molecular clouds?

A) by measuring the amount of interstellar reddening B) by measuring the Doppler shifts of emission lines from gas clumps in the cloud C) by measuring the infrared light emitted by the cloud D) by measuring the polarization of starlight passing through the cloud E) by measuring the amount by which gravity is reduced

Physics & Space Science

If y = 0.02 sin (30x ? 400t) (SI units), the velocity of the wave is

a. 3/40 m/s. b. 40/3 m/s. c. 60?/400 m/s. d. 400/60? m/s. e. 400 m/s.

Physics & Space Science

The wavelength of a radio wave from an AM station broadcasting at 1,000 kilohertz on your radio dial is __________

Fill in the blank(s) with correct word

Physics & Space Science

A 5.00 kg mass is located at (2.00 m, 0.00 m, 3.00 m) and a 2.00 kg mass is located at (0.00 m, 4.00 m, –2.00 m). The center of gravity of the system of masses is

A. (10/7m, 8/7m, 11/7m). B. (11/7m, 7/7m, 8/7m). C. (7/7m, 10/7m, 11/7m). D. (10/7m, 7/7m, 8/7m). E. (8/7m, 7/7m, 10/7m).

Physics & Space Science