Direction: Use the words below to complete the following sentences. Write your answer on a separate sheet of paper. A. Radio waves are produced through aerial in the form of is used (usually a radio or a television). The receiving aerial pick-ups the waves _5_ as the radio waves. which travel through the atmosphere. Another 3. as and converts them into an alternating current with the same Alternating currents, aerial, receiver, transmitting, frequency B. Radio waves can experience Other broadcasts, tuned to a similar caused by 8 such as mountains. can also interfere. Interference, frequency, obstruction C. Radio waves cannot be 12 10 or 13 but when they reach a _11_ , they are converted into or Receiver, heard, sound, pictures, seen D. Radio waves are good at get to listen to radio and TV broadcasts. TVs and radios can (sending out to lots of receivers) and that is how we _15_ broadcast signals using _14. antennas. Broadcasting, receive

Direction: Use the words below to complete the following sentences. Write your answer on a separate sheet of paper. A. Radio waves are produced through aerial in the form of is used (usually a radio or a television). The receiving aerial pick-ups the waves _5_ as the radio waves. which travel through the atmosphere. Another 3. as and converts them into an alternating current with the same Alternating currents, aerial, receiver, transmitting, frequency B. Radio waves can experience Other broadcasts, tuned to a similar caused by 8 such as mountains. can also interfere. Interference, frequency, obstruction C. Radio waves cannot be 12 10 or 13 but when they reach a _11_ , they are converted into or Receiver, heard, sound, pictures, seen D. Radio waves are good at get to listen to radio and TV broadcasts. TVs and radios can (sending out to lots of receivers) and that is how we _15_ broadcast signals using _14. antennas. Broadcasting, receive

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter22: Magnetism

Section: Chapter Questions

Problem 18PE: An electron in a TV CRT moves with a speed at 6.00107m/s, in a direction perpendicular to the...

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Similar questions

(a) What is the speed of a supersonic aircraft with a 17.0-m wingspan, if it experiences a 1.60V Hall voltage between its wing lips when in level flight over the north magnetic pole, where the Earth's field strength is 8.00105T ? (b) Explain why very little current flows as a result of this Hall voltage.
. The generator at a large power plant has an output of 1,000,000 kW at 24,000 V. (a) If it were a DC generator, what would he the current in it? (b) What is its energy output each day—in joules and in kilowatt—hours? (c) If this energy is sold at a price of 10 cents per kilowatt-hour, how much revenue does the power plant generate each day?
An electron in a TV CRT moves with a speed at 6.00107m/s, in a direction perpendicular to the Earth’s field, which has a strength of 5.00105T. (a) What strength electric field must be applied perpendicular to the Earth’s field to make the election moves in a straight line? (b) If this is done between plates separated by 1.00 cm, what is the voltage applied? (Note that TVs are usually surrounded by a ferromagnetic material to shield against external magnetic fields and avoid the need for such a correction.)
A 8-turn generator coil with area 0.155 m^2 rotates in a 1.20 T magnetic field. At what frequency should the coil rotate to produce a peak emf of 150, expressed four sig figs with approp units. Attached are self notes. If you help me with the symbology... I know that f = frequency. I am not at clear the other symbols.
The 17.0 cm long rod in the figure below moves at 4.00 m/s. What is the strength (in T) of the magnetic field if a 8.90 V emf is induced?
1. The force on a wire carrying 8.75 A is a maximum of 1.28 N when placed between the pole faces of a magnet. If the pole faces are 5.4 cm in diameter, what is the approximate strength of the magnetic field? 2. A 60 W fluorescent bulb hasa resistance of about 12 Q when cold (30C) and 120 Q when on (hot). Estimate the temperature of the filament when hot assuming an average temperature coefficient of resistivity a = 0.0080(C°)¹.
Show your solutions Consider a circular coil of radius 6 cm that has 70 loops. Its orientation forms magnetic field lines that are perpendicular to the area of the coil. Suppose the magnetic field changed from 0.20T to 0.65T in 5 milliseconds, how much average EMF is induced in the coil? A.71.4 V B.110.0 V C.33.5 V D.67.8 V
QUESTION 4 What is the direction of the induced current? AA B (outward) vAt O A. clockwise O B. counterclockwise QUESTION 5 Refer to the figure in the previous question. What is the emf induced when a 5.41-cm conducting rod attached to a U-shaped conductor moves at 1.1 m/s perpendicular to a magnetic field of strength 17.4 T? Please the numeric answer in terms of V (volts). Normal format with 3 SF, QUESTION 6 Find the magnitude of the induced emf in a circular coil with 27 loops and a radius 6.82 cm. The coil begins completely outside any magnetic field, and then during the next 12.5 seconds it moves completely into a uniform 4.75-T magnetic field. Assume that the plane of the loop and the direction of motion are both perpendicular to the magnetic field. Express your answer in Volts. Normal format with 3 SF.
3. A wire is moving on frictionless rails in a uniform magnetic field, as shown to the right. The wire is part of a complete circuit with a resistance R. a. If the magnetic field is 0.05 T and the wire is 5 cm long, what speed is necessary to produce an emf of 2 mV across the ends of the wire? b. If the resistance is 20 2, what is the current in the circuit?
1. The force between two long parallel conductors is 15 kg/meter. The conductor spacing is 10 cm. If one conductor carries twice the current of the other, calculate the current in each conductor.? 2.A solenoid 0.2m long has 1000 turns of wire and is oriented with its axis parallel to the earth's magnetic field at a place where the latter is 25micro tesla. What should be the current in the solenoid in order that the field exactly cancels the earth's field inside the solenoid.?
NASA has sent a satellite into orbit around Earth that has a 500m long cable that extands from its bottom, and is dragged through Earth's magnetic field. The satellite orbits at a velocity of 4,000m/s, and the Earth's magnetic field has a strength of 5.0x10-5T. The wire has a resistance of 1200N. Show which equation you would use to calculate the EMF. Calculate the EMF | Show which equation you would use to calculate the power output of the wire. Calculate the power output of the wire.
The metal rod (shown below) moves to the right on essentially zero-resistance and zerofriction rails at a speed v = 3.0 m/s. The magnetic field B = 0.75T everywhere in the region.a. What is the current through the 5.0-Ω resistor? b. Does the current circulate clockwise or counterclockwise?c. What is the rate at which the resistor produces heat (i.e., the power dissipated bythe resistor)?d. The rod moves 3.0 m/s to the right because an external agent is exerting a constantforce on it to the right. What is the magnitude of this force? e. Use your answer to part (d) to find the rate at which the external agent does workon the rod.f. Discuss the significance of your results for parts (c) and (e).