Two cars crash head on. At any given time during the crash, the magnitudes of the collision forces exerted on each car are exactly equal. This is an example of Newton's
a. first law. b. second law.
c. third law. d. no law.
c
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The ____________________ of a star can be determined from its color
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Earthquake waves are classified as P waves and S waves. Which of the following statements is true about these waves?
A. The P wave is transverse as is the S wave. B. The P wave is longitudinal as is the S wave. C. The P wave is transverse and the S wave is longitudinal. D. The P wave is longitudinal and the S wave is transverse. E. Both the P and S waves are mixtures of longitudinal and transverse waves.
According to Einstein, as the wavelength of the incident monochromatic light beam becomes shorter, the work function of a target material in a phototube:
a. increases. b. is directly proportional to wavelength. c. decreases. d. remains constant.
The notation s-1 means __________
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