Driving to work one morning, you get a flat tire. when using the car jack, you apply 120n of force to the jack and the jack in turn applies 2000n of force to lift the car up. what is the mechanical advantage of the jack?

16.7

Explanation:

Mechanical advantage is the ratio of the output force to the input force.

MA = Fout / Fin

MA = 2000 N / 120 N

MA ≈ 16.7

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation:

spare some change and give it to the poor

explanation:

plz : ((