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A parallel-plate capacitor with plates of area 441 cm2 is charged to a potential difference V and is then disconnected from the voltage source. When the plates are moved 5.02 mm farther apart, the voltage between the plates increases by 81.0 Volts. What is the charge on the positive plate of the capacitor? How much does the energy stored in the capacitor increase due to the movement of the plates?
A 9.4 cm diameter loop of wire is initially oriented perpendicular to a 2.3 T magnetic field. determine the average induced emf in the loop
A 518- physics student stands on a bathroom scale in an 846- (including the student) elevator that is supported by a cable. As the elevator starts moving, the scale reads 464. Find the magnitude of the acceleration of the elevator
A highway is to be built between two towns, one of which lies 37.0 km south and 49.0 km west of the other. What is the shortest length of highway that can be built between the two towns
A motorboat is pointed due south, and its motor gives the boat a constant speed of 5.00 m/s through still water. Find the magnitude and direction of the boat's total velocity
Express the power in terms of some or all of the variables given in the problem introduction.
Donovan Bailey set a world record for the 100-m dash on July 27, 1996. If observers on a spaceship moving with a speed of 0.7705 c relative to Earth saw Donovan Bailey's run
A crate is dragged 4.0m along a rough floor with a constant velocity by a worker applying a force of 450N to a rope at an angle of 30? to the horizontal
A block is resting on a ramp with coefficient of friction between the blockand the ramp being .350, What is the max angle that the block can make without slipping
A 200 turn 10^-3 cross sectional area coil is immersed in a magnetic field such that the plane of the coil is perpendicular to the field. how much voltage is induced
A 66 kg rock climber is climbing a so called chimney between two rock slabs, What is her push against the rock
A 7.5m long extension cord carries a current of 12 amps. The cord is made of two wires, carrying currents in opposite directions, separated by a distance of 4.9mm
Satellite orbits the earth at a distance equal to twice the earth's radius above the surface of the earth (the total distance from the center of the earth is three times the radius of the earth).
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