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A local radio station transmits radio waves uniformly in all directions with a total power of 7.50 x 104 W. What is the intensity of these waves when they reach a receiving antenna located 20.0 km from the transmitting antenna?
A vertical electric field of magnitude 2.25*104 N/C exists above the Earth's surface on a day when a thunderstorm is brewing. A car with a rectangular size of 6.00 m by 3.00 m is traveling along a dry gravel roadway sloping downward at15.5°. Decide t..
A cord is attached to a cart that can slide along a frictionless horizontal rail aligned along an x-axis. The left end of the cord is pulled over a pulley, a negligible mass and friction and at cord height h [m], so the car slides from x1 to x2. Duri..
The electric potential at a position located a distance of 20.7 mm from a positive point charge of 7.50×10-9C, Calculate the value of the second charge
a ocean waves move toward the beach with a speed of 8.90 ms and a crest-to-crest separatiion of 15.0 m. you are in a
The power of sunlight reaching each square meter of the Earth's surface on a clear day in the tropics is close to 1 000 W. On a winter day in Manitoba, the power concentration of sunlight can be 100 W/m2. Find the power per unit area used by the ca..
The kinetic friction of one metal object sliding along anothermetal surface depends lease upon:
A 4.8mH toroidal inductor has 140 identical equally spaced coils. If it carries an 11.5 A current, how much magnetic flux passes through each of its coils
In an eye that is farsighted, the eye focuses parallel rays so that the image would form behind the retina. In an eye that is nearsighted, the image is formed in front of the retina.
An antifreeze solution is made by mixing ethylene glycol(p=1116 kg/m3) with water. obtain the volume percentage of ethylene glycol in the solution
An organ pipe is closed at both ends. The pipe is designed to produce the note middle C (282 Hertz). Evaluate how long is the pipe? Calculate the frequency of the second harmonic
Calculate the deflection that a penny, dropped from the Empirestate building, would experience due to the coriolis force. You may ignore air drag in your calculation.
a uniform rope of mass 110 g and length 150 cm hangs from a ceiling. a find the speed of a transverse wave on the rope
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