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A future geosynchronous space station will be used to collect solar energy. The energy is transmitted back to earth as an electromagnetic beam. The beam has a cross sectional area of 12.5m^2 and transmits an average power of 1.20 x 10^4 kW. What are the rms values of the electric of the and magnetic field of the beam? If the solar average power density is 1.4 kW/m^2, how large are the station's solar panels, assume 100% efficiency?
a glider with mass m= 0.200 kg sits on a frictionless horizontal air track, What is the displacement x of the glider from its equilibrium position when its speed is 0.20 m/s
A 7.40-nC charge is positioned 1.70 m from a 4.80-nC charge. (a) Find the magnitude of electrostatic force that one particle exerts on the other. (b) Is the force attractive or repulsive.
A solenoid 85.0 cm long has a cross-sectional area of 22.0 cm2. It has 1000 turns of wire, and is carrying a current of 6.60 A. What is the magnetic field inside the solenoid
A tennis ball is hit straight up at 25 m/s from the edge of a sheer cliff. Some time later, the ball passes the original height from which it was hit, What total distance did the ball travel
Assume blood flow using poiseuille's law. If cholesterol reduces the diameter of an artery by 20%, by what percentage will the blood flow rate be reduced
A resistor of unknown resistance and a 42.0-? resistor are connected across a 123.0-V emf device in such a way that an 10.0-A current flows
After being accelerated through a potential difference of 5.42 kV, a singly charged carbon ion (12C) moves in a circle of radius 20.8 cm in the magnetic field of a mass spectrometer. What is the magnitude of the field
What is the volume of the bubble when it reaches just below the surface of the lake, where temperature is 20°C.
A cyclotron designed to accelerate protons has a magnetic field of magnitude 0.590 T over a region of radius 1.40 m, What is the cyclotron frequency
If the internal energy of a system increases as the result of an adiabatic process, Calculate the work done on or by the system in part (a) if its internal energy increases by 700J
A ball of mass 20 kg moves with a velocity of 2 m/s along the +x axis (call it ball A). It collides with a ball of mass 12 kg which is initially at rest (call it B), What is the final velocity of ball B
what is the initial velocity of a silver bullet if it completely melts when striking a werewolf? the initial temperature of the bullet is 300
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