A satellite of mass m has an orbital period T when it is in a circular orbit of radius R around the earth. If the satellite instead had mass 4m, its orbital period would be

A) 4T.
B) 2T.
C) T.
D) T/2.
E) T/4.


C

Physics & Space Science

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A known weight W is supported at B by two separate cables, AB and BC. Later cable BD with known tensile force TBD 5 W/2 is added to prevent oscillations. The force in cable AB, TAB, is (in terms of weight W):

(A) 20.98W
(B) 0.96W
(C) 20.84W
(D) 20.76W

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What is the potential difference VB?VA when I = 0.50 A in the circuit segment shown below?

A. +28 V B. +2.0 V C. ?28 V D. ?2.0 V E. +18 V

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A resistor is made out of a wire having a length L. When the ends of the wire are attached across the terminals of an ideal battery having a constant voltage V0 across its terminals, there is current I through the wire

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Physics & Space Science