If the intensity of a sound is increased by a factor of 100, how is the decibel level affected?
Increase of 20 dB
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A hockey puck traveling at speed v on essentially frictionless ice collides elastically with one end of a straight stick lying flat on the ice. In this collision
A. momentum is conserved. B. angular momentum is conserved. C. energy is conserved. D. all of the above are conserved. E. only momentum and angular momentum are conserved.
What happens to the frequency of the scattered X-rays beam as the scattering angle in the Compton effect decreases?
A) It stays the same. B) It decreases. C) It increases. D) Not enough information
You leave a black, spherical bowling ball out in the hot sun and it warms to a scalding hot temperature of 80ºC. The ball has a radius of 0.25 m (25 cm). What is the total power being radiated outward from this hot ball at this temperature?
In a Young's double-slit interference apparatus, by what factor is the distance between adjacent light and dark fringes changed when the wavelength of the source is doubled?
a. 1/2 c. 1 b. 1/4 d. 2