The ramp does 480J of useful work with an efficiency of 80% .
<h3>What is efficiency of work done ?</h3>
- Efficiency is the ratio of the useful energy released by a system to the input energy .
- Mathematically, efficiency of energy = out put energy/ input energy
<h3>
What is the useful work done by the ramp having efficiency 80% and an input work done 600J?</h3>
- The efficiency =output work done/ input work done
- 80% =output work done/ 600J
- output work done =( 80×600)/100
=480J
Thus, we can conclude that the useful work done by the ramp is 480J.
Learn more about efficiency of energy here:
brainly.com/question/14280607
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Kinetic Energy is the energy of motion, this means whatever letter(s) show the ball moving it's fastest is it's maximum Kinetic Energy
Hello there.
<span>Petrol tankers have a metal chain hanging that touches the ground. Can you say why?
</span>
Those chains are
Called Grounding chain.
Why do Petrol tankers have them not sure.
Hope my answer helped!
A microwave uses heat waves that keeps in side the machine to heat up the cup of water
Hope this helps :)