A point source emits monochromatic electromagnetic waves into air uniformly in all directions. You measure the amplitude Emax of the electric field at several distances from the source. After graphing your results as Emax versus 1/r you find that the data lie close to a straight line that has slope 25.0 N⋅m/C. What is the average power output of the source?
Answers: 2
Physics, 22.06.2019 10:30, zoebtharpe
An insulated 40 ft^3 rigid tank contains air at 50 psia and 120°f. a valve connected to the tank is now opened, and air is allowed to escape until the pressure inside drops to 25 psia. the air temperature during this process is kept constant by an electric resistance heater placed in the tank. determine the electrical work done during this process.
Answers: 2
Physics, 22.06.2019 10:30, Bayabbay8380
Arunner is training for an upcoming marathon by running around a 100-m-diameter circular track at constant speed. let a coordinate system have its origin at the center of the circle with the x-axis pointing east and the y-axis north. the runner starts at (x, y) = (50 m, 0 m) and runs 2.5 times around the track in a clockwise direction.
Answers: 1
A point source emits monochromatic electromagnetic waves into air uniformly in all directions. You m...
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