cristalcastro901
02.03.2021 •
Physics
An energy-saving light bulb wastes 5 J of energy for every 20 J of energy it radiates as light
(2 marks)
a) How much energy is supplied to it for every 20 J of energy it radiates as light?
b) Calculate its efficiency.
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Ответ:
just do it Like Nikey
Step-by-step explanation:
lol