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Q. Three identical baseballs are rolling from 3 frictionless hills that have the similar height but different slopes. If the speeds of each ball are the similar while they are at the top, describe the changes of velocity, acceleration in each case while they are rolling down the slope. Furthermore, describe any differences in kinetic energy and gravitation potential energy among these balls while they hit the ground.
What is the lift (in newtons) by reason of Bernoulli's principle on a wing of area 77 m^2 if the air passes over the top and bottom surfaces at speeds of 270 m/s and 140 m/s, correspondingly.
What is electric field in the wire
A 12.0 kg bucket of water of is suspended by a rope wrapped around a windlass, which is the solid cylinder 0.500 m in diameter with mass 14.0 kg. The cylinder is pivoted on a frictionless axle through its center. The bucket is released from rest at t..
What is the difference between mass and weight? On earth, what is the weight of a 1 kg mass?
A river flows due east at 1.43 m/s. A boat crosses the river from south shore to the north shore by maintaining a constant velocity of 10.5 m/s due north relative to the water.
How to find the magnetic field
What are the forces acting on the board due to the two supports as a diver of mass 63 kg stands at the end of the board over the water.
It compresses the spring, and then is pushed back in the opposite direction by the spring, eventually losing contact with the spring.
A 52.0 skateboarder wants to just make it to the upper edge of a "quarter pipe," a track that is one-quarter of a circle with a radius of 2.90. What speed does he need at the bottom.
A 115 granite cube slides down a 35 frictionless ramp. At the bottom, just as it exits onto a horizontal table, it collides with a 235 steel cube at rest.
A series of small machine components being moved by a conveyor belt passes over a 140-mm-radius idler pulley. At the instant shown, the angular velocity of the idler pulley is 5 rad/s clockwise. If the total acceleration of point B is 2400 mm/s2, wha..
A 10.00 kg grocery is pushed 12.0 m along an aisle by a shopper who exerts a constant horizontal force of 40.0 N. a.) What work is done on the cart? b.)If all frictional forces are neglected, and the cart starts form rest, what is the grocery cart..
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