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A future space station in orbit about the earth is being powered by an electromagnetic bean from the earth. The beam has a cross-sectional area of 135m2 and transmits and average power of 1.20*104W. What is the intensity of this beam, the maximum value of the electric field and the magnetic field?
Two charged plates create a potential difference of 190 V. At a point halfway between the plates an electron is released from rest. What was the initial speed and direction of the proton
a rifle has the mass of 4.5 kg and it fires a bullet mass 10.0 at a muzzle speed of 820 m/s. What is the recoil speed as the bullet leaves the gun barrel
how long will it take a sound wave to travel 10 cm if the velocity is 100 m/s. what is the propagation speed of water that travels 6 cm in 4 seconds
A generator at a power plant produces a voltage of 9.00 kV and current 150 A. How much power is lost as waste heat in the transmission line
Water flows though a 20mm diameter pipe at 3L/min and static pressure of 100mmHG. What is the wall stress of the pipe. The pipe is 1.5mm thick
Galileo dropped a ball from the tower of Pisa. The ball hit the ground in 3 seconds. what was the speed on striking the ground
A long, current-carrying solenoid with an air core has 1640 turns per meter of length and a radius of 0.0173 m. What is the mutual inductance of this system
A puck (mass m1 = 1.30 kg) slides on a frictionless table as shown in the figure below. The puck is tied to a string that runs through a hole in the table and is attached to a mass m2 = 3.9 kg. What is the change in the kinetic energy of the puck
a spring with a spring constant of 120 nm lies on a horizontal frictionless table. the spring is attached to a 1.5-kg
Calculate the buoyant force in air on a kilogram of lead (whose density is about 11 grams per cubic centimeter). Compare with the weight mg of this much lead.
A horizontal spring-mass system has low friction, spring stiffness 150 N/m, and mass 0.4 kg. What is the maximum speed during the motion
what is the magnitude of the charge on each sphere. A car crashes into a wall at 45 m/s and is brought to rest in 0.1 s. compute the average force exerted on a 80 kg test dummy by the seat belt.
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