An object is placed in front of a concave mirror. The object is farther from the mirror than the focal length of the mirror. The type of image reflected from the mirror is ________ and the orientation of the image is ________.
Fill in the blank(s) with the appropriate word(s).
real, inverted
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To what types of electrically charged objects does Coulomb's law apply?
A) only pointlike particles B) any symmetric objects C) it applies to all such objects D) only pointlike particles and objects that can be treated as particles E) it applies to all such objects as long as they are not moving
Which of the following correctly lists the various parts of the electromagnetic spectrum in the correct order from lowest to highest energy.
A. infrared, ultraviolet, radio waves, gamma rays, visible B. gamma rays, infrared, ultraviolet, radio waves, visible C. radio waves, ultraviolet, visible, infrared, gamma rays D. gamma rays, ultraviolet, visible, infrared, radio waves E. radio waves, infrared, visible, ultraviolet, gamma rays
How is it possible that the Moon might have some water ice today?
A) Ice brought by comet impacts may be frozen in craters near the Moon's poles. B) Ice is continually supplied to the Moon by impacts, and some of this ice will therefore be found almost anywhere on the Moon at all times. C) Some cold regions of the Moon may still have ice that originally formed from the condensation of water released by outgassing. D) The Moon has significant amounts of water bonded in its surface rock, so some of this water is frozen as ice.
A “free” electron and a “free” proton are placed in an identical electric field. Is the following statement true or false?
Each particle is acted upon by the same electric force and has the same acceleration.
1.False 2.True