What is the magnification of a telescope and eyepiece if the telescope objective has a focal length of 200 cm and the eyepiece has a focal length of 2.0 cm?
a. 400 times
b. 4000 times
c. 100 times
d. 1000 times
e. 40 times
c
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Compared to life on Europa, if life exists on Ganymede it will probably be
A) less abundant and less evolved B) more abundant and more evolved C) less abundant but more evolved D) more abundant but less evolved
A straight wire (length = 8.0 m) is bent to form a square. If the wire carries a current of 20 A, what is the magnitude of the magnetic field at the center of the square?
A. 17 ?T B. 14 ?T C. 11 ?T D. 20 ?T E. 36 ?T
Capacitors in Combination: A 5.0-?F, a 14-?F, and a 21 ?F capacitor are connected in parallel. How much capacitance would a single capacitor need to have to replace the three capacitors?
A. 40 ?F B. 21 ?F C. 5.0 ?F D. 14 ?F
Weight and g: A spherically symmetric planet has four times the earth's mass and twice its radius. If a jar of peanut butter weighs 12 N on the surface of the Earth, how much would it weigh on the surface of this planet?
A. 3.0 N B. 6.0 N C. 12 N D. 24 N E. 36 N