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Assume the electric force on a proton due to some source charge q is F. Now assume we increase the distance between the proton and q by a factor of 4. Determine the force on the proton now in terms of the original force F?
Consider a tennis ball that is hit by a player at the baseline with a horizontal velocity of 50 m/s (about 110 mi/h). What is the ball's angular velocity
A 80 kg person sits on a 4 kg chair. Each leg of the chair makes contact with the floor in a circle that is 1.3 cm in diameter. Find the pressure in pascals exerted on the floor by each leg of the chair, assuming the weight is evenly distributed.
A golfer hits a shot to a green that is elevated 3.0 meter above the point where the ball is struck. evaluate the speed of the ball just before it lands
A single current carrying loop has a magnetic dipole moment of 10i - 20j + 15k Am2 and is in a region of space, Find the torque on the current loop
A point particle with charge q = 82 µC is placed at a corner of a cube of edge a = 11 cm. What is the flux through (a) each cube face forming that corner and (b) each of the other cube faces?
Obtain what energy is dissipated by a lightning bolt having a 18,000 Amp current, a voltage of 106 MV, and a time duration of 1.00 milliseconds
Gas is confined in a tank at a pressure of 11.9 atm and a temperature of 23.0°C. If two-thirds of the gas is withdrawn and the temperature is raised to 76.0°C
A luggage lock, like the one shown above, has a 3-digit combination set with 3 dials, each of which has 10 settings (0-9), What is the probability of dialing the correct combination in one try by chance?
The output voltage of a 63 W transformer is 15 V, and the input current is 17A. By what factor is the voltage multiplied? Assume 100% efficiency. . .
A car of mass 1110 kg travels at a speed of 20 ms-1 along a straight road. The driver sees a red traffic light ahead, and applies brakes. The coefficient of friction between the car tyres and the road is 0.83. Take the acceleration due to gravity to ..
A woman stands in an elevator that has a constant upwardacceleration while the elevator travels upward a distance of18.0 m. What is the acceleration of the elevator
A weather vane initially at rest has a moment of inertia of 0.125 kg · m2 about its axis of rotation. Find the angular velocity of the weather vane just after it is struck
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