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Alik [6]
3 years ago
5

The total amount of electrical energy used by a

Physics
2 answers:
tia_tia [17]3 years ago
7 0

The amount of electrical energy used by the television is given by:

E=Pt

where P is the power of the device and t is the time.


The power of the television is P=315 W, while the total time is

t=30.0 min \cdot 60 =1800 s

If we substitute these numbers into the formula, we find the energy:

E=Pt=(315 W)(1800 s)=5.67 \cdot 10^5 J


so, the correct answer is

(1) 5.67 × 10^5 J

Dmitriy789 [7]3 years ago
3 0
W=Pt
W - energy, P - power, t - time

P=315 \ W \\
t= 30 \ min= 30 \times 60 \ s = 1800 \ s \\ \\
W=315 \times 1800=567000=5.67 \times 10^5 \ [J]

The answer is (1).
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