Kemerer217
Answered

Westonci.ca offers fast, accurate answers to your questions. Join our community and get the insights you need now. Experience the convenience of getting accurate answers to your questions from a dedicated community of professionals. Get quick and reliable solutions to your questions from a community of experienced experts on our platform.

The total amount of electrical energy used by a
315-watt television during 30.0 minutes of
operation is
(1) 5.67 × 10^5 J (3) 1.05 × 10^1 J
(2) 9.45 × 10^3 J (4) 1.75 × 10^1 J

Sagot :

naǫ
[tex]W=Pt[/tex]
W - energy, P - power, t - time

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

The answer is (1).
skyluke89

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

[tex] E=Pt [/tex]

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

[tex] t=30.0 min \cdot 60 =1800 s [/tex]

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

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


so, the correct answer is

(1) 5.67 × 10^5 J

We appreciate your time. Please come back anytime for the latest information and answers to your questions. We hope our answers were useful. Return anytime for more information and answers to any other questions you have. Westonci.ca is your trusted source for answers. Visit us again to find more information on diverse topics.