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In a "Rotor-ride" at a carnival, people pay money to be rotated in a vertical cylindrically walled "room." If the room radius is 4.4 m, and the rotation frequency is 0.8 revolutions per second when the floor drops out, what is the minimum coefficient of static friction so that the people will not slip down?
A magnetic field of 3 Tesla is oriented into the page. A 10 cm long conducting bar is pulled to the right at a constant speed of 3.4 m/s. What is the magnitude of the current in the bar
A swimmer heads directly across a river, swimming at 1.9 m/s relative to the water. She arrives at a point 34 m downstream from point directly across the river, which is 80 m wide.
A 65kg, 1.70m tall person is standing in a room, Find the air temperature at which the heat transfer rate by radiation is just balanced by the rate of heat generation
Inside the tube is a uniformelectric field of 4.50*10-4 N/C pointing in negativey-direction. How far does the particle travel before hitting the tube wall.
The green block(B) has a mass of 10.00kg and is moving to the left at a speed of 3.70m/s. What should the velocity of the red block be in order to have the two blocks move to the right with a speed of 1.30 after the collision
Use conservation of energy to calculate the speed of the alpha particle at infinity. m/s (e) If the two protons are released from rest and the alpha particle remains fixed, calculate the speed of the protons at infinity. m/s
The magnitude of the air resistance that opposes its downward motion is 258 N. Explain what is the magnitude of the acceleration of the rock?
What is the centripetal force that would be required to keep a 4.0 kg mass moving in a horizontal circle with a radius of 0.80 meters at a speed of 6.0 meters/second?
A proton is released from rest at the positive plate of a parallel-plate capacitor, What will be the proton's final speed if the experiment is repeated with double the amount of charge in each capacitor plate
Unless otherwise stated, all objects are located near the Earth's surface, where g = 9.80 m/s2. find the coefficient of kinetic friction between the ice and the puck
On Mars, where air resistance is negligible, an astronaut drops a rock from a cliff and notes that the rock falls about d meters during the first t seconds of its fall. Assuming the rock does not hit the ground first, how far will it fall during t..
A playground is on the flat roof of a city school, 5 m above the street below (see figure). The vertical wall of the building is h = 6.20m high, to form a 1.20 m high railing around the playground.
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