6. if a person pushes a cart with a force of 40

n and it accelerates at 0.5 m/s2, what is the<...

Physics, 08.11.2019 11:31, NNopeNNopeNNope

# 6. if a person pushes a cart with a force of 40

n and it accelerates at 0.5 m/s2, what is the

mass of the cart?

a. 80n

b. 80 kg

c. 20 n

d. 20 kg

Answers: 1

Physics, 22.06.2019 00:20, jholland03

Acertain elevator cab has a total run of 211 from rest? (b) how long does it take to make the nonstop 211 m run, starting and ending at rest? and a maximum speed is 311 m/min, and it accelerates from rest and then back to rest at 1.14 m/s. (a) how far does the cab move while accelerating to full speed?

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 08:30, fernandoramirez086

Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.

Answers: 3

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