How does the speed at which waves move help scientists "see" the inside layers of the earth?
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Waves move more quickly through areas of high pressure and temperature.
Waves travel through more compact materials more quickly than through loose, sandy materials.
Waves’ amplitudes increase with the density of a material.
Waves travel through different materials at different speeds.
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F500 j of energy were added to 1 kg of each of these samples, which would experience the least temperature increase?
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An incident ray through the focal point of a spherical mirror will: reflect through the center of curvature. reflect back through the focal point. reflect parallel to the principle axis. reflect the same direction as the incident ray.
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The system is released from rest with the cable taut, and the homogeneous cylinder does not slip on the rough incline. determine the angular acceleration of the cylinder and the minimum coeffi cient s of friction for which the cylinder will not slip.
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1. jay fills a wagon with sand (about 20 kg) and pulls it with a rope 30 m along the beach. he holds the rope 25° above the horizontal. the rope exerts a 20-n tension force on the wagon. how much work does the rope do on the wagon?
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How does the speed at which waves move help scientists "see" the inside layers of the earth?
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