The speed of a sound wave depends on A. the air temperature. B. its frequency. C. its wavelength. D. all of the above E. none of the above
The speed of a sound wave depends on D. all of the above.
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t Object]User: If your car runs out of gas, why can’t you push on the car’s windshield from the inside to move it? A. In order for the car to move, a force must be exerted by you on the car’s windshield. B. In order for the car to move, a force must be exerted by the car’s windshield on you. C. In order for the car to move, an outside force must be exerted on the car. D. In order for the car to move, a force must be exerted by the car on the ground.
Weegy: The answer is C. In order for the car to move, an outside force must be exerted on the car. User: A 20-N falling object encounters 4 N of air resistance. The magnitude of the net force on the object is A. 0 N. B. 4 N. C. 16 N. D. 20 N. E. none of the above Weegy: The answer is C. 16 N. User: A ball is thrown straight up. At the top of its path its acceleration is A. 0 m/s2. B. about 5 m/s2. C. about 10 m/s2. D. about 20 m/s2. E. about 50 m/s2. Weegy: The answer is A. 0 m/s2. (More)
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The hang time (time one's feet are off the ground in a jump) for most athletes is A. less than 1 second. B. considerably more than 1 second. C. about 1 second. D. slightly more than 1 second.
Weegy: B. considerably more than 1 second. This was done by sport scientists. Most professional basketball players can realisticly stay air borne for a matter of 3 seconds. [ More taller athletes can spend that second a a half longer in the air. English football players can stay in the air for a quick 2 seconds. American football players can spend an impressive 3 and a hlaf seconds in the air. ] User: Speed is A. a measure of how fast something is moving. B. always measured in terms of a unit of distance divided by a unit of time. C. the distance covered per unit time. D. all of the above. E. none of the above. (More)
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A ball is thrown into the air at some angle. At the very top of the ball's path, its velocity is A. entirely vertical. B. There's not enough information given to determine. C. both vertical and horizontal. D. entirely horizontal.
Weegy: 8) a ball is thrown into the air at some angle. at the very top of the ball's path, its velocity is b) entirely horizontal (More)
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