The objective lens of a refracting telescope has a focal length of 60 cm and the eyepiece a focal length of 8.0 cm. What is the angular magnification of the telescope?
A)
34
B)
480
C)
68
D)
0
E)
7.5
E
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The south end of a bar magnet is pushed downward toward a wire loop in the plane of the paper. In which direction is the induced current, and which way is the induced magnetic field?
A. clockwise, into the paper B. clockwise, out of the paper C. counter-clockwise, into the paper D. counter-clockwise, out of the paper E. There is no induced current.
Which of the following is the most geologically active moon?
A) Ganymede B) Callisto C) Europa D) Io
As the air cools at night the relative humidity usually __________
Fill in the blank(s) with correct word
A block of steel is found on a ship sunk in 5000 meters of water, where pressures are about 500 times that on the Earth at sea level. To know its dimensions at sea level, which relationship between stress and strain for this metal would we need to know?
1.Young's modulus 2.shear modulus 3.bulk modulus 4.none of these