How much longer does the Sun have to live?
A: About a month- no need to study for finals!
B: About 2 years- are you going to graduate in time?
C: About a million years- not too much to worry about.
D: About 5.5 billion years- what is humanity going to be like?
E: The Sun won't die- how silly is that?
Ans: D: About 5.5 billion years- what is humanity going to be like?
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When you jump from an elevated position you usually bend your knees upon reaching the ground. By doing this, the contact time is about 10 times more than for a stiff-legged landing and the average force your body experiences is reduced by
A) less than 10 times. B) more than 10 times. C) about 10 times.
The darker-colored bands in Jupiter's atmosphere are ________.
A. moving downward B. lower in altitude than the lighter-colored bands C. transparent, relative to the lighter-colored bands D. warmer than the lighter-colored bands E. All of these choices are correct.
If the diameter of a radar dish is doubled, what happens to its resolving power assuming that all other factors remain unchanged?
A) The resolving power quadruples. B) The resolving power doubles. C) The resolving power is cut in half. D) The resolving power is reduced to one-quarter its original value.
According to modern science, what was the approximate chemical composition of the solar nebula?
A) 50% hydrogen and helium, 50% everything else B) 98% hydrogen and helium, 2% everything else C) 98% hydrogen, 2% helium D) roughly equal proportions of hydrogen, helium, water, and methane