Kemerer217
Answered

Welcome to Westonci.ca, where finding answers to your questions is made simple by our community of experts. Our platform provides a seamless experience for finding precise answers from a network of experienced 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

Visit us again for up-to-date and reliable answers. We're always ready to assist you with your informational needs. Your visit means a lot to us. Don't hesitate to return for more reliable answers to any questions you may have. Westonci.ca is committed to providing accurate answers. Come back soon for more trustworthy information.