Neutron stars are expected to spin rapidly because
a. they conserved angular momentum when they collapsed.
b. they have high orbital velocities.
c. they have high densities.
d. they have high temperatures.
e. the energy from the supernova explosion that formed them made them spin faster.
a
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The speedometer of an automobile reads
A) average speed. B) instantaneous speed. C) accelerated speed.
During the approach of a severe thunderstorm, workers on a project see lightning and then hear the resulting thunder 55 s later. Approximately how far away, in miles, is the storm?
a. 11 mi b. 22 mi c. 12 mi d. 13 mi
A cannon of mass 1500 kg fires a 10-kg shell with a velocity of 200 m/s at an angle of 30° above the horizontal. Find the recoil velocity of the cannon across the level ground
a. 1.15 m/s c. 2.41 m/s b. 0.94 m/s d. 1.94 m/s
A series RLC circuit has a resistance of 500
and inductance of 20.0 mH, and a capacitance of 2.00 
F The power source provides a voltage of v = (170 sin(377t))V. What is the impedance of this circuit?
A. 0.402 k
B. 1.33 k
C. 1.25 k
D. 1.41 k
E. 2.15 k