A satellite orbits the earth once every 2.0 h. What is the orbital period of another satellite whose orbital radius is 4.0 times larger?

A. 4.0 h
B. 8.0 h
C. 16 h
D. 64 h
E. Some other period (specify)


C. 16 h

Physics & Space Science

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The only INVALID electron state and shell designation among the following is

A) 1s, K. B) 2s, L. C) 2d, L. D) 3s, M. E) 3d, M.

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How do we most accurately measure the distance to the Moon?

A. We measure the lunar period and use Kepler's Third Law. B. We measure its angular size and compare it to its actual diameter, which gives us its distance. C. We bounce a pulse of light off the lunar surface and measure how long the trip takes. D. We know how long it took Apollo astronauts to get there, and how fast the rocket traveled. E. All of these choices provide equally accurate measurements.

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Consider a capacitor connected across the ac source. As the capacitance is increased, the current through the capacitor will

A) increase. B) remain constant. C) decrease.

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A 3.0-kg object moving 8.0 m/s in the positive x direction has a one-dimensional elastic collision with an object (mass = M) initially at rest. After the collision the object of unknown mass has a velocity of 6.0 m/s in the positive x direction. What is M?

a. 7.5 kg b. 5.0 kg c. 6.0 kg d. 4.2 kg e. 8.0 kg

Physics & Space Science