If two quarks in an anti-proton have the color anti-red and anti-blue, the third quark must have the color
a. red.
b. blue.
c. anti-purple.
d. anti-green.
d
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A fountain sends a stream of water 20.0 m up into the air. If the base of the stream is 10.0 cm in diameter, what power is required to send the water to this height?
What will be an ideal response?
What happens after many generations of the star-gas-star cycle?
A) The heavy element abundance decreases; the amount of gas increases. B) The heavy element abundance increases; the amount of gas decreases. C) The heavy element abundance increases; the amount of gas stays the same. D) The amount of gas and heavy elements stay the same: it's a cycle. E) The heavy element abundance stays the same; the amount of gas decreases. F) The heavy element abundance increases; the amount of gas increases.
Is it possible to see a waxing crescent moon on the overhead meridian at 10 A.M. local time? How about at 4 P.M. local time? Explain your answers
200 J of work is done in compressing a gas adiabatically. What is the change in internal energy of the gas?
A) zero B) 100 J C) 150 J D) 200 J E) There is not enough information to determine.