Weight and g: What would be the weight of a 59.1-kg astronaut on a planet with the same density as Earth and having twice Earth's radius?
A. 580 N
B. 290 N
C. 1160 N
D. 2320 N
E. 1200 N
Answer: C
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A yellow candle flame reflects from opposite surfaces of a piece of red glass
A) both images are yellow B) one image is yellow and the other red C) both images are red D) both images are reddish yellow
Identical point charges (+30 ?C) are placed at the corners of a rectangle (4.0 m × 6.0 m). How much external energy is required to bring a charge of 55 ?C from infinity to the midpoint of one of the 6.0-m long sides of the rectangle?
A. 22 J B. 16 J C. 13 J D. 19 J E. 8.0 J
A ball is thrown upward. After the ball is released upward and is in the air, its acceleration
1.remains the same. 2.increases. 3.decreases and then increases. 4.increases and then decreases.
A 3.00 kg pendulum bob on a string 2.00 m long, is released with a velocity of 2.00 m/s when the support string makes an angle of 45.0 degrees with the vertical. What is the tangential acceleration of the bob at the highest point of its motion?
A. 6.04 
B. 6.89
C. 7.80
D. 8.20
E. 9.02