Question

A washing machine uses 1.8 × 105 watts of power. If it is in use for 2 hours per day (on average), how many kilowatt hours will it use in 30 days?
A. 1,100 kilowatt hours
B. 36 kilowatt hours
C. 18 kilowatt hours
D. 540 kilowatt hours
E. 1.1 × 106 kilowatt hours

Answer 1

Take your rating, multiplied by the amount of hours per day, multiplied by the number of days. Then convert your answer to kilo (10^3) and you're done.

Answer 2

If i get 10800000 before converting , how do i convert it?

Answer 3

You will move the decimal place to the left.

Answer 4

Its not one of the answers though..

Answer 5

Sorry, something came up.

Answer 6

its ok. Do u get my other question?

Answer 7

A toaster is plugged into an 120-volt outlet. If it has a resistance of 460 ohms, how much power does it use?
A. 1,800 watts
B. 3.8 watts
C. 31 watts
D. 55,000 watts
E. 340 watts

Answer 8

Your second question uses P=V^2/R