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The escape velocity of a bullet from the surface of planet Y is 1599.0 m/s. Calculate the escape velocity from the surface of the planet X if the mass of planet X is 1.23 times that of Y, and its radius is 0.783 times the radius of Y.
3 Mass points each of mass m are placed at the vertices of an equilateral triangle of side l. What is the gravitational feild and potential due to 3 masses
Kathy tests her new sports car by racing with Stan, an experienced racer. Both start from rest, Find the distance she travels before she catches him
If the water in the river is flowing at 3.0 m/s, explain how long does it take the boat to make a round trip consisting of a 250 m displacement downstream followed by a 250 m displacement upstream?
A drag racer crosses the finish line doing 216 mi/h and promptly deploys her drag chute, What force must the drag chute exert on the 850 kg car to slow it to 45.2 mi/h in a distance of 161 m
A solenoid (coil) has a radius of 7.2 cm, a length of 31.5 cm, and has 380 turns of wire. A current of 350 mA runs through the coil. Calculate the field strength inside the coil
A heavy crate is attached to the wall by a light rope. Another rope hangs off the opposite edge of the box. If you slowly increase the force on the free rope by pulling on it in a horizontal direction, which rope will break? Ignore friction and th..
A uniform cylinder of mass m=8.26 kg and radius R=0.147 m is released from rest on an inclined plane (theta=42.4 deg), What is the magnitude of the angular velocity just before the cylinder reaches the horizontal surface
After falling from rest from a height of 35 m, a 0.58-kg ball rebounds upward, reaching the height of 26 m. If the contact between ball and ground lasted 2.5 ms, what average force was exerted on ball.
On a workday the average decibel level of a busy street is 74 dB, with 100 cars passing a given point every minute. what is the decibel level of the street
A metal bar with a resistance of 30 Ohm is rotated around its center in a magnetic field of strength .5 T which is oriented perpendicularly to the plane of the bar's rotation. what is the electrical power dissipated in the resistor
A proton is released from rest at the positive plate of a parallel-plate capacitor. What will be the final speed of an electron released from rest at the negative plate
A man enters a tall tower, needing to know its height. He notes that a long pendulum extends from the ceiling almost to the floor, How tall is the tower
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