What is not an example of work, according to the scientific definition?

Explanation:

Work is defined as the scalar product of force and displacement in the direction of the force.

Then work is not done when a force applied cause no displacement, i.e the body still remains in it's original position

Take for instance you want a push a car to start and after apply force, the car did not move away from it's position due to friction or other forces opposition your force, then you have done no work.

Carry a pot of water on ones head for 2hrs or more without leaving the position is punishment and not work.

The person has done no work.

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:

answer: good job it's all correct !

explanation: