Physics, 09.02.2021 14:30 aaliyahlopez85
Efficiency
1. A man is researching energy saving light bulbs. One of the bulbs he is interested in is a 40W bulb
which uses 700) of electrical energy in a given time period during which it transfers 500J of light
energy. The remaining energy is wasted.
How much energy is wasted during this period of time?
Answers: 2
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Efficiency
1. A man is researching energy saving light bulbs. One of the bulbs he is interested in...
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