A 4,000 kg satellite is traveling in a circular orbit 200 km above the surface of the Earth. A 3.00 gram marble is dropped inside the satellite. What is the acceleration of the marble as viewed by the observers inside the satellite? 
A. 0.00 
B. 1.62
C. 2.64
D. 4.90
E. 9.24
A. 0.00
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Water at 4°C will sink to the bottom of a pond because
A) it will not freeze there. B) it benefits fish and other life forms there. C) like a rock, it is denser than surrounding water. D) of the presence of microscopic ice crystals.
If the distance between the slits is doubled in Young’s experiment, what happens to the width of the central maximum?
1.The width is doubled. 2.The width is unchanged. 3.The width is halved.
A 1200-kg car is being raised with a constant acceleration of 2.53 m/s2 by a crane, using a 20-m long steel cable, 1.5 cm in diameter. Young's modulus for steel is 20 × 1010 N/m2. What is the change in length of the cable?
A) 8.4 mm B) 8.4 cm C) 4.9 mm D) 4.9 cm E) 4.9 m
The quantity called the "enclosed mass" M( A) concentrated in the center
B) spread out over a large volume
C) distributed in the shape of a doughnut, with a hole in the center
D) impossible to say