A sign uses energy at a rate of 65.0 W. a) How long, in seconds, will it take for the sign to use 255000 J of energy. b) What would 255000 J be in kilowatt-hours (kWh).
Added by Heath A.
Step 1
Given: Power (P) = 65.0 W Energy (E) = 255000 J We know that power is the rate of consumption of energy, so we can use the formula: Power = Energy / Time Rearranging the formula to solve for time: Time = Energy / Power Plugging in the values: Time = 255000 J / Show more…
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