an engin does 1500J of useful wor with each 5000J of energy supplied to it.
what is its efficiency? what happens to the rest of the energy supplied?
2007-05-22 07:22:29 · 4 answers · asked by jessica 1 in Science & Mathematics ➔ Chemistry
The efficiency is 1500/5000 times 100%. The rest of the energy is given off as heat.
2007-05-22 07:27:37 · answer #1 · answered by chemmie 4 · 0⤊ 0⤋
The efficiency is the useful work divided by the energy supplied. So, 1500/5000= 0.30, or an efficiency of 30%.
The rest of the energy supplied is just released as heat.
2007-05-22 14:27:38 · answer #2 · answered by hcbiochem 7 · 0⤊ 0⤋
efficiency= work imput\work output*100 so efficiency=1500\5000*100=30%efficient. the rest is lost as heat.( NB. there is no such thing as 100% effficiency
2007-05-22 15:23:07 · answer #3 · answered by Dr. Eddie 6 · 0⤊ 0⤋
(1500/5000) *100% =30%
The rest is lost as heat, sound etc
2007-05-22 14:33:07 · answer #4 · answered by big_rock_1983 2 · 0⤊ 0⤋