What is the surface temperature of a distant star (which emits light as if it were a blackbody) where the peak wavelength is 422 nm? (Hint: The surface of the human body at 35ºC has a peak wavelength of 9.41 ?m). (1 nm = 10?9 m = 10–3 ?m)
a. 12,900 K
b. 13,800 K
c. 6870 K
d. 13,700 K
e. 2290 K
c
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Total internal reflection occurs when the angle of incidence of the light is greater than the ______________ angle
Fill in the blank(s) with correct word
Imagine what would happen if Jupiter were suddenly replaced by a black hole with the same mass as Jupiter
A) The entire solar system would instantly be sucked into the black hole. B) The orbits of the solar system would be unaffected (including Jupiter's). C) The other planets and the Sun would slowly be pulled into Jupiter. D) The other planets would slowly be pulled into Jupiter, but the Sun would be unaffected.
Which of the following are basic postulates of special relativity? (There could be more than one correct choice.)
A) The speed of light is the same for all observers. B) No material object can be accelerated to the speed of light. C) The laws of physics are the same in all inertial reference frames. D) Nothing can travel faster than the speed of light. E) The laws of physics are the same in all reference frames.
The parallel that is a great circle is the ______________
Fill in the blank(s) with correct word