If the frequency of a photon is halved, what happens to its energy?
A) It is doubled.
B) It is halved.
C) It is tripled.
D) It is quadrupled.
E) It is reduced by one-fourth.
B
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H I clouds can be observed using _____
a. optical telescopes above the earth's atmosphere b. 21-cm radiation c. x-ray radiation d. infrared radiation e. ultraviolet radiation
A vehicle designed to operate on a drag strip accelerates from zero to 30 m/s while undergoing a straight line path displacement of 60 m. What is the vehicle's acceleration if its value may be assumed to be constant?
a. 2.0 m/s2 c. 10 m/s2 b. 7.5 m/s2 d. 15 m/s2
A bimetallic strip is usable as a thermometer because of the property of __________
Fill in the blank(s) with correct word
How do we test our computer models for the interior of the Sun?
A) taking movies of the solar prominences and flares B) sending a probe to the Sun to plunge into its interior C) monitoring the helium content of the surface of the Sun D) comparing model predictions to how the Sun actually vibrates