physics

posted by .

How much would it cost to watch a football game on the television with a power rating of 300 W for 3.0 h if electrical energy costs \$0.10/kW·h?

0.108 wasent right

• physics -

(300•10^-3)kW•3 h • \$0.1 = 0.09\$

Similar Questions

1. physics

Approximately 5.5 X10^6 kg of water fall 50m over Niagara Falls each second. a) What is the decrease in the gravitational potential energy of the water-Earth system each second?
2. physics

Approximately 5.5 X10^6 kg of water fall 50m over Niagara Falls each second. a) What is the decrease in the gravitational potential energy of the water-Earth system each second?
3. Physics

A 120-V motor has mechanical power output of 2.00 hp. It is 82.0% efficient in converting power that it takes in by electrical transmission into mechanical power. (a) Find the current in the motor (b) Find the energy delivered to the …
4. physics

1A) A filament lamp- cost- 80p effiency- 0.2 expected life- 1000 hours a compact fluorescent lamp (CFL)- cost- £3.00 effiency- 0.8 expected life- 8000 hours a filament lamp with a power rating of 100W gives 2000 units of light. what …

1. Which of the following energy transformations best describes the operation of a solar powered battery charger?
6. Physics multiple choice questions

1. Which of the following energy transformations best describes the operation of a solar powered battery charger?
7. Physics multiple choice questions

1. Which of the following energy transformations best describes the operation of a solar powered battery charger?
8. science.......

An electric bulb is marked 220v60w. An ammeter in the circuit shows the bulb uses a current of 0.2727A. The bulb burns for an hour. Calculate the following: A. The electrical energy consumption B. The cost for the bulb to burn for …
9. math

A survey of 500 television viewers produced the following information,285 watch football,195 watch hockey,115 watch basketball,45 watch football and basketball,70 watch football and hockey,50 watch hockey and basketball and 50 do not …
10. sets, maths

A survey of 500 television viewers produced the following information,285 watch football,195 watch hockey,115 watch basketball,45 watch football and basketball,70 watch football and hockey,50 watch hockey and basketball and 50 do not …

More Similar Questions