Which of the following electromagnetic radiations has the greatest frequency?

a. Ultraviolet
b. Infrared
c. Radio
d. Visible


a

Physics & Space Science

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The sidereal period is _______________ days long, the time it takes the Moon to circle the sky once and return to the same position relative to the stars

Fill in the blank(s) with correct word

Physics & Space Science

Hot, low-density gas can be detected in galactic clusters through X-ray emission. The gas is important in understanding dark matter because ____

a. dark matter is responsible for heating the gas b. dark matter must make the cluster massive enough to hold on to the hot gas c. the gas may be the source of dark matter d. the gas is clumped in empty places between galaxies where there is more dark matter e. the gas is produced by dark matter

Physics & Space Science

Tsunami are correctly referred to as

A) seismic sea waves. B) tidal waves. C) energy waves. D) mega waves.

Physics & Space Science

An electron moving perpendicular to a uniform magnetic field of 3.2 × 10-2 T moves in a circle of radius 0.40 cm. How fast is this electron moving? (mel = 9.11 × 10-31 kg, e = 1.60 × 10-19 C)

A) 2.2 × 107 m/s B) 1.9 × 10-2 m/s C) 1.9 × 10-30 m/s D) 3.0 × 106 m/s E) 8.0 × 106 m/s

Physics & Space Science