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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 rope 3.4 m long has a mass of 0.85 kg. The tension in the rope is 51.0 N. What is the frequency of the power source if the power transmitted is 118 W
Find both the position of as a function of time x(t) and the velocity v(t) for the following two forces, assuming the particle is at rest at x=0 and t=0. (assume that Fo, b, and k are constants)
A 2.0kg wood block is launched up a wooden ramp that is inclined at a 27? angle. What speed does it have when it slides back down to its starting point
A velodrome track is banked so that a bicycle traveling at 78.2 km/h will have no tendency to slip to either side when traveling on the path that has a radius of curvature of 76.0 m
A cell phone transmits at a frequency of 1.28 108 Hz. What is the wavelength of the electromagnetic wave used by this phone
An ideal gas in a container is at a temperature of 78.5°C. What is the average translational kinetic energy of a gas
At a right angle to a magnetic field. The acceleration of gravity is 9.81 m/s2. What is strength of the magnetic field necessary to exactly balance the weight of the proton and keep it moving horizontally.
q1. a calculate the magnitude of the gravitational force exerted by venus on an 80 kg human standing on the surface of
a 45kg box is pulled across a horizontal floor. a rope attached to the box makes an angle of 30 degrees with the
Eratosthenes measured the circumference of the Earth by noting that the Sun is at an angle of 7°12' = 7.2° ("one-fiftieth of a circle") south of the vertical in Alexandria at the same time of day, What was Eratosthenes percent error
question1a relaxed biceps muscle requires a force of 25.0n for an elongation of 3.0 cm below maximum tension the same
Two cars collide at an intersection. Car A with a mass of 1800kg, is going from west to east, while car B of mass 1400kg, How fast was car A going just before the collision
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