When a falling meteor is at a distance above the Earth's surface of 3 times the Earth's radius, what is its acceleration due to the Earth's gravity?
0.613 m/s2
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When Nellie Newton hangs at rest in the middle of a clothesline, tensions will be the same in each side of the rope when
A) the lengths of each rope are the same. B) the angles for both sides of the rope are equal. C) she is in equilibrium.
As a basketball player starts to jump for a rebound, he begins to move upward faster and faster until he leaves the floor. During this time that he is in contact with the floor, the force of the floor on his shoes is:
a. bigger than his weight. b. equal in magnitude and opposite in direction to his weight. c. less than his weight. d. zero.
What is the potential difference across C2 when C1 = 5.0 ?F, C2 = 15 ?F, C3 = 30 ?F, and V0 = 24 V?
a.
21 V
b.
19 V
c.
16 V
d.
24 V
e.
8.0 V
Refracting Telescope: You have available lenses of focal lengths 2.0 cm, 4.0 cm, 8.0 cm, and 16 cm. If you could use any two of these lenses to build a telescope, what is the lens separation for the telescope to provide the maximum magnification for comfortable viewing of a planet?
A. 10.0 cm B. 12.0 cm C. 18.0 cm D. 24.0 cm