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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.
A uniform solid disk of mass m = 3.05 kg and radius r = 0.200 m rotates about a fixed axis perpendicular to its face with angular frequency 5.97 rad/s. Calculate the magnitude of the angular momentum of the disk
In a 261-turn automobile alternator, the magnetic flux in each turn is ?B = (2.62E-4 T*m2) cos(?t), determine the maximum emf in the alternator
Write a general expression of the flux
A Carnot engine takes an amount of heat QH = 111 J from a high-temperature reservoir at temperature TH = 1030 °C, Find the amount of work that is obtained from this process
A mass m equals 4 kg on a slanted surface theta equals 30 degrees. A light rigid cord runs from mass m to pully beta equals 1/2, calculate the magnitude of the systems acceleration
A simple harmonic oscillator takes 17 seconds to undergo 17 complete oscillations. What is the frequency of the oscillator
A skier of mass m glides down a hill of slope ? at constant speed. If she travels a distance d down the hill, what is the work done by friction
slides 145m before coming to a halt. Illustrate what is the coefficient of friction between the skies and the snow?
The pulley system is used to lift a 61 kg crate. Note that one chain connects the upper pulley to the ceiling and a second chain connects the lower pulley to the crate. The crate is rising with an acceleration of 2.4 m/s2. Assume the masses of the ch..
A 4kg parcel of dry air initially at p=950mb and T=295K compresses isobarically to one third of its original volume, Calculate the final temperature and the work done
A polar bear starts at the North Pole. It travels 1.0 km south, then 1.0 km east, then 1.0 km north, What was the bear's average velocity
A current of 18.0 mA is maintained in a single circular loop of 3.70 m circumference. Calculate the magnetic moment of the loop.
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