Mike pulls a 4.5-kg sled across level snow with a force of 22.5 N along a rope that is 35 degrees above the horizontal. If the sled moves a distance of 65.3 m, how much work does Mike do?

W = 1203.54 J = 1.2 KJ

Explanation:

The work done on an object is defined as the product of the displacement of the object and the force applied in the direction of that displacement. Hence, the formula for work done is as follows:

where,

W = Work done by Mike = ?

F = Force applied by Mike = 22.5 N

θ = Angle between force and displacement = 35°

d = displacement of sled = 65.3 m

Therefore,

W = 1203.54 J = 1.2 KJ

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:

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