The dwarf planet Pluto and its moon Charon are unique in the Solar Systems in that the orbital period of Charon equals the rotation period of Pluto. The synchronous rotation is the result of tidal interaction between them.
Answer the following statement true (T) or false (F)
True
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Compared with falling on a wooden floor, a wine glass may not break when it falls on a carpeted floor because of
A) lesser impulse in stopping. B) longer time to stop. C) both of these D) none of the above
When our Earth becomes tidally locked with the Moon, which of the following statements will be true?
A. An astronaut on the Moon would see only one side of Earth. B. The Moon will not go through phases. C. The Moon will only be visible during the day. D. There will be no eclipses.
A 50.0 cm long organ pipe is filled with air at 10.0
and is open at both ends. The velocity of sound in air at 0.00 
is 331 m/s. Another 50.0 cm long organ pipe is filled with air at 15.0
and is open at both ends. What is the beat frequency between the fundamental modes of the two organ pipes?
A. 2.96 Hz B. 2.45 Hz C. 2.10 Hz D. 1.94 Hz E. 1.77 Hz
Estimate the mass of a nucleus with radius 2.8 ×10-15 m. (1 u = 1.6605 × 10-27 kg)
A) about 7.5 × 10-27 kg B) about 4.7 × 10-26 kg C) about 2.1 × 10-26 kg D) about 2.3 × 10-26 kg