The angle between two plane mirrors that meet at one edge is 45°. The change in direction of a ray that strikes the first mirror at a 60° angle of incidence when that ray reflects from the second mirror is
a. 0°.
b. 45°
c. 90°
d. 150°
e. 270°
D
Physics & Space Science
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An electron is moving at
m/s at an angle of 40
to a 0.80 T magnetic field. What is the magnitude of the acceleration of the electron?
A. 
B. 
C. 
D. 
E. 
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A _________ has a radius of about 10 km and is supported by the pressure associated with degenerate neutrons
a. black hole b. neutron star c. white dwarf d. supernova remnant e. red dwarf
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Which statement about Jupiter is true?
A. It is more massive than all other planets combined. B. It may become a star in about a billion years. C. It is the least dense of the Giant Planets. D. It has a solid core of ice about 1,000 km under the visible surface.
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The Moon's albedo is ______________
Fill in the blank(s) with correct word
Physics & Space Science