Physics, 05.10.2019 02:30 BluedragonKBT44
In what ratio the mass 4m should be split so the value of gravitational force comes maximum for a fix distance d between the masses?
f=g(4m-x)/r^2 g/r^2(4m-x^2)
Answers: 1
Physics, 21.06.2019 23:40, lekylawhite16
What is meant by the statement" the melting poin of glycerine is 13 degree celsius
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 11:00, flores1717
Positrons are spontaneously emitted from the nuclei of
Answers: 1
In what ratio the mass 4m should be split so the value of gravitational force comes maximum for a fi...
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