Physics, 18.09.2019 18:20, ashlpiriz123
Suppose a rock is dropped into a well 9.8 meters deep. a) determine the amount of time t it takes for the rock to hit the bottom of the well. t = incorrect: your answer is incorrect. b) determine the velocity v of the rock as it is hitting the bottom of the well. v = c) if the bottom of the well is lined with thick sand so that the rock does not bounce, what is the velocity vf of the rock just after it hits the bottom of the well? vf =
Answers: 1
Physics, 22.06.2019 13:40, youngbeauty17
Awind turbine is rotating counterclockwise at 0.5 rev/s and slows to a stop in 10 s. its blades are 20 m in length. (a) what is the angular acceleration of the turbine? (b) what is the centripetal acceleration of the tip of the blades at t=0s? (c) what is the magnitude and direction of the total linear acceleration of the tip of the blades at t=0s?
Answers: 1
Physics, 22.06.2019 16:40, dylan6981
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
Physics, 23.06.2019 06:30, lovecats12
Acar weighs 15,000 n, and its tires are inflated to a pressure of 190kpa. how large is the area of the car's tires that are in contact with the road?
Answers: 1
Suppose a rock is dropped into a well 9.8 meters deep. a) determine the amount of time t it takes fo...
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