A box is pushed 40 meters by a mover. The amount of work done was 2,240 joules. How much force was exerted on the box? Write the formula used in the correct form and your answer with the appropriate unit.

56N

Explanation:

Given parameters:

Distance  = 40m

Work done  = 2240J

Unknown:

Force exerted  = ?

Solution:

The work done on a body is the force applied to move a body through a certain distance.

           Work done  = Force x distance

 Now insert the parameters and solve for the force

          2240  = Force x 40

           Force  = 56N

low freq = 100 mhz

low wavelength =101.7m

length = 3x10^8/freq