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The amplitude of an electric field is 0.4 v/m 23 km from a radio transmitter. What is the total power emitted by the transmitter, if one assumes the radiation is emitted isotropically. The impedence of free space is 377 ohms. Answer in units of W.
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Question: A particle of charge 5.05nC is placed at the origin of an xy-coordinate system, and a second particle of charge -2.04nC is placed on the positive x-axis at x= 4.04cm . A third particle, of charge 6.00nC is now ...
Question: A ring with radius R and a uniformly distributed total charge Q lies in the xy plane, centered at the origin. Part A: What is the potential V(z) due to the ring on the z axis as a function of z? Express your an ...
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Question: This problem concerns the properties of circular orbits for a satellite of mass m orbiting a planet of mass M in an almost circular orbit of radius r. In doing this problem, you are to assume that the planet ha ...
What is the (magnitude of the) velocity of a rollercoaster at the bottom of a track that is 89.8 m high if it starts from rest? (Use the value g = 9.8 m/s2 for the acceleration of gravity.) Please provide work to explain
Consider the roller coaster below in terms of speed. Where will it speed up and where will it slow down? From this consideration, make a sketch of a velocity-time graph for this image. Explain your graph. Post your sketc ...
Question: It is proposed that future space stations create an artificial gravity by rotating. Suppose a space station is constructed as a 1000-m-diameter cylinder that rotates about its axis. The inside surface is the de ...
Question: One type of BB gun uses a spring-driven plunger to blow the BB from its barrel. (a) Calculate the force constant of its plunger's spring if you must compress it 0.130 m to drive the 0.0580-kg plunger to a top s ...
Speedy Mike, driving at 32.0 m/s enters a one-lane tunnel. He then observes a slow-moving van 160m ahead traveling at 5.50 m/s. Mike applies his brakes but can accelerate only at -1.50 m/s^2 because the road is wet. Will ...
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