A hockey puck slides off the edge of a table at point A with an initial velocity of 20.0 m/s and experiences no air resistance
The height of the tabletop above the ground is 2.00 m.
(a) What is the speed (not the velocity) of the puck just before it touches the ground?
(b) What is the distance between point A and the point where the puck hits the ground?
(a) 21.0 m/s (b) 12.9 m
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Kepler's Laws: It takes the planet Jupiter 12 years to orbit the sun once in a nearly circular orbit. Assuming that Jupiter's orbit is truly circular, what is the distance from Jupiter to the sun, given that the distance from the earth to the sun is 1.5 × 1011 m?
A. 3.9 × 1011 m B. 5.2 × 1011 m C. 7.9 × 1011 m D. 9.7 × 1011 m E. 3.2 × 1012 m
A CD has a diameter of 12.0 cm. If the CD is rotating at a constant angular velocity of 20 radians per seconds, then the tangential velocity of a point on the circumference is
A. 2.0 m/s. B. 1.9 m/s. C. 1.5 m/s. D. 1.2 m/s. E. 1.0 m/s.
Which of the following particles interact via the strong interaction?
A. gravitons B. quarks C. leptons D. neutrinos
When a 12.0-V battery causes 2.00 ?C of charge to flow onto the plates of an air-filled capacitor, how much work did the battery do?
A) 24.0 ?J B) 12.0 ?J C) 144 ?J D) 576 J