Stars originate as large bodies of slowly rotating gas. Because of gravity, these clumps of gas slowly decrease in size. The angular velocity of a star increases as it shrinks because of
a. conservation of angular momentum
b. conservation of linear momentum
c. conservation of energy
d. the law of universal gravitation
e. conservation of mass
A
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Which of the following describes impact cratering?
A) the excavation of bowl-shaped depressions by asteroids or comets striking a planet's surface B) the eruption of molten rock from a planet's interior to its surface C) The disruption of a planet's surface by internal stresses D) the wearing down or building up of geological features by wind, water, ice, and other phenomena of planetary weather
When a spring is stretched, its mass decreases
Indicate whether the statement is true or false
Compared to when it was on the surface, a satellite in an orbit whose radius is about 4 times the Earth's radius will experience about 1/16 the force due to the Earth's gravity
Indicate whether the statement is true or false
A 40.0 cm long organ pipe is filled with air and is open at both ends. The velocity of sound in air at0
is 331 m/s. If the temperature of the air increases by 10
then what is the frequency of the fundamental mode?
A. 367 Hz B. 395 Hz C. 401 Hz D. 421 Hz E. 480 Hz