Physics, 01.10.2019 02:50 destinywashere101
Arailroad train is traveling at 32 m/s in still air. the frequency of the train whistle is 350 hz. what is the wavelength of the sound and the frequency of the sound heard by the listener in front of the locomotive?
Answers: 2
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How many dots must be added to the symbol to properly represent a standard nitrogen ion? a) 1 b) 3 c) 5 d) 8
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A58-kg boy swings a baseball bat, which causes a 0.140-kg baseball to move toward third base with a velocity of 38.0 m/s.
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Physics, 22.06.2019 18:30
Aballoon is rising vertically upwards at a velocity of 10m/s. when it is at a height of 45m from the ground, a parachute bails out from it. after 3s he opens his parachute and decelerates ata a constant rate 5m/s.when. (a) what was the height of the parachutist above the ground when he opened his parachute? (b)how far is the parachutist from the balloon at t=3s? (c)with what velocity does the parachutist hit the ground? (d)after how long does the parachutist hit the ground after his exist from the balloon?
Answers: 3
Arailroad train is traveling at 32 m/s in still air. the frequency of the train whistle is 350 hz. w...
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