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Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.
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The astronauts on the space shuttle flights experienced an acceleration of 29 m/s2 (about 3 "g's") during lift-off. what upward force must the astronaut's seat apply to the astronaut in order to cause this acceleration? assume the astronaut's mass is 70 kg, and compute this force when the acceleration is near the earth's surface so their weight equals latex: mg m g .
Answers: 3
A piano emits frequencies that range from a low of about 28 Hz to a high of about 4200 Hz. Find the...
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