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A flat coil of wire is used with an LC-tuned circuit as a receiving antenna. The coil has a radius of 0.24 m and consists of 360 turns. The transmitted radio wave has a frequency of 1.2 MHz. The magnetic field of the wave is parallel to the normal to the coil and has a maximum value of 2.2 × 10-13 T. Using Faraday's law of electromagnetic induction and the fact that the magnetic field changes from zero to its maximum value in one-quarter of a wave period, find the magnitude of the average emf induced in the antenna during this time.
the electrons that produce the picture in a tv set are accelerated by a very large electric force as they pass through
A high-voltage transmission line with the resistance of 0.30 /km carries a current of 950 A. The line is at a potential of 710 kV at the power station and carries the current to a city located 161 km from the station.
An air conditioning unit keeps a house cool at 68 degrees Fahrenheit when the outsid temperature is 95 degrees Fahrenheit. how much does it exhaust to the outside
A string fixed at both ends is 5.8 m long and has a mass of 0.21 kg. It is subjected to a tension of 120 N and set oscillating. (a) What is the speed of the waves on the string? (b) What is the longest possible wavelength for a standing wave? (c) Giv..
Suppose you want to design a microscope so that for a fixed distance between the two lenses, If you want the distance between the eyepiece and objective to be 35 cm, what should the focal length of the objective be
You are given a 10-mH inductor and two capacitors, of 5.0- and 2.0-?F capacitance. List the resonant frequencies that can be generated by connecting these element in various combinations.
Light intensity of a 100 W bulb at a certain distance is 1 W/m2. The distance is doubled. What are the electric field amplitude and the magnetic field amplitude at that new distance
A block starts from rest at the top of a 35° inclined plane and encounters a spring, of constant 6.4 kN/m, rigidly attached to the plane. find the distance the block travelled before it encountered the spring
The efficiency of a particular Carnot engine is 0.310, Find the temperature of the low-temperature reservoir
A .075 Kg toy rocket is launched straight up from the ground at 19 m/s. Calculate the power of gravity force during the first 10s
A certain orthodontist uses a wire brace to align a patient's crooked tooth as in the figure below, Find the magnitude of the net force exerted by the wire on the crooked tooth
a 1210-kg car and a 2240-kg pickup truck approach a curve on the expressway that has a radius of 281m. for the angle i
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