Physics, 16.09.2019 22:30 Jsquad2130
Asmall submarine is underwater and moving horizontal at the same constant speed as the northward current in a straight, level section of a river. it releases a sensor that will float in the water. if resistance is negligible, what is the shape of the path followed by the sensor?
Answers: 3
Physics, 21.06.2019 22:30
Matt is driving down 7th street. he drives 150 meters in 18 sec. assuming he doesnât slow down or speed up, what is his speed?
Answers: 1
Physics, 22.06.2019 04:30
In a system, when potential energy decreases, then entropy also decreases. true false
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Physics, 22.06.2019 07:10
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 ât. the resistance of the coil is r, and the total charge is q = iât, 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 âswipedâ 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 âswipedâ through the reader at exactly the right speed? why or why not?
Answers: 2
Physics, 22.06.2019 10:00
What is the temperature in degrees celsius of a substance with a tempature of 49k
Answers: 2
Asmall submarine is underwater and moving horizontal at the same constant speed as the northward cur...
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