Asked by Jason
a 75 w compact fluorescent bulb operating at 30% efficiency. Calculate the amount of energy lost to heat and the amount of energy converted into light after the bulb has been on for 2.0h.
Answers
Answered by
Damon
2*3600 seconds/h = 7200 seconds
75 * 7200 = 540,000 Joules total electricity use
.7 * 540,000 = heat Joules
.3 * 540,000 = light Joules
75 * 7200 = 540,000 Joules total electricity use
.7 * 540,000 = heat Joules
.3 * 540,000 = light Joules
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