neysafaria neysafaria

18-05-2020
Physics

contestada

Work out the efficiency of a lamp that transfers 7500 kJ of energy, 4500 kJ of which is transferred into light energy, 2900 kJ of which is transferred by heating and 100J of which is transferred into sound energy.
Calculate the efficiency as a percentage.

Respuesta :

showerthoughss09 showerthoughss09

18-05-2020

i think the answer is 0.4
so 40%

hope this helps :)

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