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lina2011 [118]
3 years ago
15

Using a 1-kW heater for one hour consumes more energy than using a 100-W bulb for twenty-four hours. Please select the best answ

er from the choices provided
T

F
Physics
1 answer:
Ierofanga [76]3 years ago
8 0
Power is the amount of work done per unit of time. It will have units of Watts which is equal to Joules per second. We determine the energy of each system above by multiplying the power with time. We do as follows:

E(heater) =1000 W (1 hr) (3600s/hr) = 3,600,000 J
E(bulb) = 100 W (24 hr) (3600s/hr) =   8,640,000 J

Therefore, the answer would be false. It is the bulb that consumes more energy.
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      4 =  \frac{400 - 13t_f}{ t_f} *  \frac{1}{t_f}

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