Which of the following statements about thermal radiation is always true?
A) A hot object emits more x-rays than a cool object.
B) A hot object emits more radio waves than a cool object.
C) A hot object emits more total radiation than a cool object.
D) A hot object emits more total radiation per unit surface area than a cool object.
E) A hot object emits less total radiation than a cool object.
D) A hot object emits more total radiation per unit surface area than a cool object.
You might also like to view...
Induction: If two objects are electrically attracted to each other,
A. both objects must be negatively charged. B. both objects must be positively charged. C. one object must be negatively charged and the other object must be positively charged. D. the objects could be electrically neutral. E. None of these statements are absolutely true.
The graph below indicates the temperature of Saturn's atmosphere as a function of distance from the upper cloud layer. Water will condense to form droplets at a temperature of approximately 270 K in the atmosphere of Saturn. At what distance from the upper cloud layer will clouds of water vapor form?
a.
-250 km
b.
-150 km
c.
0 km
d.
150 km
e.
250 km
Compared with the period of satellites in close Earth orbit, the period of satellites orbiting far from Earth is
A) shorter. B) the same. C) longer. D) need more information
Enrico Fermi was
A) the head of the program to develop the world's first fission bomb. B) the head of the program to develop the world's first fusion bomb. C) the inventor of radiation therapy. D) the discoverer of nuclear fission. E) the head of the program to develop the world's first nuclear reactor.