A satellite encircles Mars at a distance above its surface equal to 3 times the radius of Mars. If gm is the acceleration due to gravity at the surface of Mars, what is the acceleration due to gravity at the location of the satellite?
A) gm/9
B) 0
C) gm
D) gm/3
E) gm/16
E
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Calculations of the Sun's future evolution indicate that it will blow away almost half of its mass in several relatively short episodes about 4 to 5 billion years from now before it is finally extinguished
a. True b. False Indicate whether the statement is true or false
A ____ has a few million light sensitive diodes in an array typically about a half-inch square
a. photometer b. charge-coupled device c. spectrograph d. photographic plate e. grating
The quantum number that can have only two possible values is the
a. principal quantum number. b. orbital quantum number. c. orbital magnetic quantum number. d. spin magnetic quantum number.
A conducting rod slides at 3.0 m/s on metal rails separated by 2.0 m. The 0.66 m T magnetic field is into the paper. If the resistance is 220 m
what is the current in the circuit?
A. 18 mA
B. 9.0 mA
C. 87
A
D. 3.0
A
E. 4.5 mA