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At 2.3 kilometer from the transmitter, the peak electric field of a radio wave is 330 mV/m.
(a) Find the transmitter power output, assuming it broadcasts uniformly in all directions?
(b) Find the peak electric field 14 kilometer from the transmitter in mV/m?
A boy holds a 40-N weight at arm's length for 10 s. His arm is 1.5m ablove the ground. The work done by the force of the boy on the weight is
A student with a mass of 50.0 kg runs up threeflights of stairs in 10.0 sec. Determine the amount of work done by the student to elevate his body to this height
The distance to a point source is decreased with a factor of three. Suppose that the sound is emitted by the source uniformly in all directions. By what multiplicative factor does the intensity increase? By what additive amount does the intensity lev..
a water droplet with a mass of 46.8 ng 1 ng 1 nanogram 1e-9 g is stationary in the air under the combined influence
A machinist turns the power on to a grinding wheel, at rest, at time t = 0 s. The wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 83 rad/s. The wheel is run at that angular velocity for 29 s and then power is shu..
When light of wavelength 380 nm falls on a cesium surface,electrons are emitted that have a maximum kinetic energy of 1.13eV. Find the work function of cesium.
a 6.00 capacitor that is initially uncharged is connected in series with a 4500 resistor and a 506emf source with
A sailor drops a wrench from the top of a sailboat's vertical mast while the boat is moving rapidly and steadily straight forward. Where will the wrench hit the deck
An 800 keV photon is Compton scattered at an angle of 30 degrees. Calculate The energy of the scattered photon, The change in wavelength
Three 0.50 kg particles form an equilateral triangle with 0.60 msides. The particles are connected by rods of negligible mass. What is the rotational inertia of this rigid body about (a) an axis thatpasses through one of the particles and is paral..
A 240 N sphere 0.20 m in radius rolls, without slipping 6.0 m downa ramp that is inclined at 28 degrees with the horizontal. What is the angular speed of the sphere
Rocket-powered sleds are used to test the human response to acceleration. If a rocket-powered sled is accelerated to a speed of 444 m/s in 1.8 seconds, then what is the acceleration and what is the distance that the sled travels?
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