In what way is Pluto more like a comet than a planet?
A) It sometimes enters the inner solar system.
B) It is made mostly of rock and ice.
C) It has a long tail. It has a moon.
B
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The decay: n ? p + e- + ve does not occur as it would violate conservation of
A) baryon number. B) mass. C) charge. D) lepton number. E) angular momentum.
A 2.0 kg mass is moving along the x-axis. The potential energy curve as a function of position is shown in the figure. The kinetic energy of the object at the origin is 12 J. The system is conservative, and there is no friction
(a) What will be the kinetic energy at 2.0 m along the +x-axis? (b) What will be the speed of the object at 6.0 m along the +x-axis? What will be an ideal response?
A futuristic design for a car is to have a large solid disk-shaped flywheel within the car storing kinetic energy
The uniform flywheel has mass 370 kg with a radius of 0.500 m and can rotate up to Assuming all of this stored kinetic energy could be transferred to the linear velocity of the car, find the maximum attainable speed of the car. What will be an ideal response?
Suppose you have a time-keeping device that always reads precisely 12:00 when the Sun crosses your meridian. What kind of time is this clock keeping?
A) mean solar time B) standard time C) apparent solar time D) universal time