A force of 30N acts through a distance of 4m in the direction of the force, what is the work done

Work = 120Nm or 120J

Explanation:

Work is said to be done when a force moves a body over a distance, in the direction of force applied.

Work done = force x distance (in the direction of the force)

Therefore work = force x displacement

As displacement is distance in a specific or specified direction.

From the parameters given

Force = 30N

Displacement = 4m.

Therefore work = force x displacement

                         = 30N x 4m

Work = 120Nm or 120J

Note :J is joules which is the S. I unit of work

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if the thermos has a vacuum innner, then heat through conv currents and conduction are reduced = vacuum flask

radiation

explanation:

heat is transmitted by radiation