Physics, 08.10.2021 08:20 janinecastillo01
if the speed of the train is vt, what is the speed of the raindrops in the reference frame of the earth in which they are assumed to fall vertically?
Answers: 3
Physics, 22.06.2019 07:10, cannan
Search coils and credit cards. one practical way to measure magnetic field strength uses a small, closely wound coil called a search coil. the coil is initially held with its plane perpendicular to a magnetic field. the coil is then either quickly rotated a quarter-turn about a diameter or quickly pulled out of the field. (a) derive the equation relating the total charge q that flows through a search coil to the magnetic-field magnitude b. the search coil has n turns, each with area a, and the flux through the coil is decreased from its initial maximum value to zero in a time ∆t. the resistance of the coil is r, and the total charge is q = i∆t, where i is the average current induced by the change in flux. (b) in a credit card reader, the magnetic strip on the back of a credit card is rapidly “swiped” past a coil within the reader. explain, using the same ideas that underlie the operation of a search coil, how the reader can decode the information stored in the pattern of magnetization on the strip. (c) is it necessary that the credit card be “swiped” through the reader at exactly the right speed? why or why not?
Answers: 2
Physics, 22.06.2019 08:50, dijonmckenzie3
The electronic structure or chlorine is 2.8.7 what is the electronic structure of fluorine?
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Physics, 22.06.2019 17:30, funnybugy16
How does the entropy of steam compare to the entropy of ice?
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Physics, 23.06.2019 06:00, monkeys450
2) the sun is wonderful source of energy. it is renewable and natural with few dangers. solar cells rely on the sun for energy. these cells would be more practical to use if they were
Answers: 2
if the speed of the train is vt, what is the speed of the raindrops in the reference frame of the ea...
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