Consider a solid object which is subjected to a net torque. That object will experience which of the following?
A) a linear acceleration and an angular acceleration
B) an angular acceleration
C) a constant angular velocity
D) a changing moment of inertia
B
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The apparent size of an object based on the amount of sky it covers is called its ________.
A. shadow-width B. diameter C. angular size D. horizon E. celestial extent
The peak of the quasar epoch was:
A) when there was still enough dark matter to fuel the supermassive black holes in their bar. B) when there was still sufficient mass to fuel the supermassive black holes at their center. C) before the formation of galaxies. D) before the star formation epoch. E) before mass had a chance to accumulate at the nucleus.
A container having a volume of 1.0 m3 holds 5.0 moles of helium gas at 50°C. If the helium behaves like an ideal gas, the average kinetic energy per molecule is
A. 6.7 × 10?20 J. B. 1.0 × 10?21 J. C. 1.0 × 10?20 J. D. 6.7 × 10?21 J. E. 1.3 × 10?20 J.
All nine planets in the solar system have been visited by spacecraft
Indicate whether the statement is true or false