Physics, 20.03.2020 11:33 henryzx900
An official major league baseball has a mass of 0.14 kg. A pitcher throws a 40 m/s fastball which is hit the batter straight back up the middle at a speed of 46 m/s . a) What is the change in momentum of the ball during the collision with the bat? b) If this collision occurs during a time of 0.012 seconds, what is the average force exerted by the bat on the ball?
Answers: 3
Physics, 22.06.2019 17:30
You can watch static electricity in action by rubbing an inflated balloon against your hair. your hair will actually stand on its end! it does this because each hair becomes charged, and they all repel one another.
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Physics, 22.06.2019 18:30
Ahot-air balloon takes off from the ground traveling vertically with a constant upward acceleration of magnitude g/4. after time interval δt, a crew member releases a ballast sandbag from the basket attached to the balloon. how many seconds does it take the sandbag to reach the ground? (express your answer in terms of δt)
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Physics, 23.06.2019 00:50
Aplayer uses a hockey stick to push a puck at a constant velocity across the ice. the weight of the puck is 170 n. the coefficient of friction is 0.0600. with what force must the player push the puck so that his force just equals the frictional force? 28.3 n 0.999 n 0.102 n 0.0104 n
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Physics, 23.06.2019 05:00
The voltmeter reads 117 v and ammeter reads 0.13 a .if the resistance of ammeter and voltmeter are 9 kilo ohm and 0.015 ohm respectively ,find the value of r. 3marks
Answers: 3
An official major league baseball has a mass of 0.14 kg. A pitcher throws a 40 m/s fastball which is...
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