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The moving non-conducting belt of a Van de Graaff generator carries 10 ?C of charge up to the metal sphere each second. The steady-state potential difference between the sphere and the grounded source of charge is 250 kV. What minimum power must be supplied to the generator (by the motor moving the belt) to sustain its operation?
A fun-loving 11.4 {rm kg} otter slides up a hill and then back down to the same place. If she starts up at 5.75 {rm m/s} and returns at 3.75 {rm m/s}, how much mechanical energy did she lose on the hill.
A current of 18.0 mA is maintained in a single circular loop of 3.70 m circumference. Calculate the magnetic moment of the loop.
A tourist being chased by an angry bear is running in a straight line toward his car at a speed of 5.73 m/s, What is the maximum possible value for d
A charge of -0.62 m/C with an unknown mass hangs vertically from a string. A uniform electric field, which runs parallel to the ground (in the + x direction) is then turned on.
Calculate the total binding energy, and the binding energy per nucleon, for 7/3Li. The masses of the atoms of 7/3Li and 1/1H are 7.016004 u and 1.007825 u, respectively
An aluminum cup contains 225 g of water and a 40-g copper stirrer, all at 27°C. A 500-g sample of silver at an initial temperature of 85°C is placed in the water. Calculate the mass of the aluminum cup
In a television set the power needed to operate the picture tube comes from the secondary of a transformer. Find the current in the primary
An insulating rod of length 11.7-cm and charge 27 nC is in a plane with a long straight uniform line charge. What is the electric force on the rod
Friction and air resistance are negligible. Illustrate what speed does the ball have when the cable makes an angle of 30 degrees with respect to the vertical?
a bullet moving horizontally to the right (+x direction) with a speed of 500 m/s strikes a sandbagk, What is the average acceleration in m/s of the bullet
An electric motor with 3W of power is used to lift a .2 kg mass a height of .5 meters in 3.0 seconds
a typical maximum acceleration for a car is about 8 m/s^2, A sports car traveling at 20m/s accelerates at this rate for 1.25 seconds
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