When light passes through two or more narrow slits, an alternating dark and bright pattern is observed on a screen because of interference
a. True
b. False
Indicate whether the statement is true or false
True
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A 1.0-kg block and a 2.0-kg block are pressed together on a horizontal frictionless surface with a compressed very light spring between them. They are not attached to the spring. After they are released and have both moved free of the spring
A) the magnitude of the momentum of the heavier block will be greater than the magnitude of the momentum of the lighter block. B) the heavier block will have more kinetic energy than the lighter block. C) both blocks will both have the same amount of kinetic energy. D) the lighter block will have more kinetic energy than the heavier block. E) both blocks will have equal speeds.
________ and ________ are common in regions where subduction occurs.
A. Volcanoes; plate spreading B. Auroras; the Coriolis effect C. Mountains; earthquakes D. Rifts; polarity shifts
Earth's rotation axis traces out a cone shape in the sky, precessing in the ___________________ direction
Fill in the blank(s) with correct word
A particle (m = 20 mg, q = -5.0 mC) moves in a uniform electric field of 60 N/C in the positive x direction. At t = 0, the particle is moving 30 m/s in the positive x direction and is passing through the origin. Determine the maximum distance beyond x = 0 the particle travels in the positive x direction
a. 25 m b. 20 m c. 15 m d. 30 m e. 60 m