Pluto's density is most similar to:
A) the terrestrial planets.
B) the jovian planets.
C) moons of the jovian planets.
D) Mercury, but nor Venus, Earth, or Mars.
E) Saturn, but not Jupiter, Uranus, or Neptune.
C
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__________is a number between 1 and 0 that describes the shape of an ellipse
A) Acceleration B) Momentum C) Mass D) Eccentricity
When we apply the Lorentz factor ? to momentum, we
A) multiply by ? as with the equation for time dilation. B) multiply by the reciprocal of ?. C) find it does not apply.
The air in a pipe resonates at 120 Hz and 600 Hz, one of these resonances being the fundamental. If the pipe is open at both ends, how many resonances are between the two given ones, and if the pipe is closed at one end, how many resonances are between the two given ones?
a. open: 3; closed: 1 b. open: 1; closed: 3 c. open: 2; closed: 0 d. open: 0; closed: 2 e. open: 5; closed: 1
A perfect Carnot engine operates between 350 K and 600 K. The engine delivers 10 kJ of work in each cycle. How much heat is extracted from the 600 K reservoir in one cycle?
A) 34 kJ B) 27 kJ C) 17 kJ D) 21 kJ E) 24 kJ