A bungee cord stretches 25 meters and has a spring constant of 140 N/m. How much energy is stored in the bungee

Explanation:

The potential energy stored in a stretch spring is given by the expression below

PE = Work = force * distance

So:

This then simplifies to:

where k is the spring constant= 140 N/m

Given that x= 25 m

Substituting our data into the expression for P.E stored we have

Hence the energy stored in the spring is 87.5kJ

b.transmitters send radio waves, and receivers capture radio waves.

it doesn't. it was imagined up in the middle ages.