Physics, 06.11.2019 21:31 crispingolfer7082
Apellet gun fires ten 2.0 g pellets per second with a speed of 500 m/s. the pellets are stopped by a rigid wall. what are
(a) the magnitude of the momentum of each pellet,
(b) the kinetic energy of each pellet, and
(c) the magnitude of the average force on the wall from the stream of pellets?
(d) if each pellet is in contact with the wall for 0.60 ms, what is the magnitude of the average force on the wall from each pellet during contact?
(e) why is this average force so different from the average force calculated in (c)?
Answers: 2
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Amachinist turns the power on to a grinding wheel, at rest, at time t = 0 s. the wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 96 rad/s. the wheel is run at that angular velocity for 40 s and then power is shut off. the wheel slows down uniformly at 1.5 rad/s2 until the wheel stops. in this situation, the time interval of deceleration is closest to:
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Physics, 22.06.2019 21:10
A10-kg isto a of 10 m at aa0.9 kg/m.30 kg of ,at aas10-m .. ( 9.8 m/s2 g.)
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Apellet gun fires ten 2.0 g pellets per second with a speed of 500 m/s. the pellets are stopped by a...
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