An engineer measures the peak power output of an industrial engine. The peak power output is 0.3064 MW . What is the peak power output in kilowatts?

The cost of electricity in Los Angeles is 5 cents per 1,000,000 joules. Suppose a small 2000-watt air conditioning unit is operated continuously for 3 hours. What is the cost (in dollars) of the total energy consumed?

A hair dryer is rated at 1200 W. One average, it is used for 400 minutes every month. The rate for electrical energy is8.8¢/kWh. What is the cost of electrical energy necessary to run the hair dryer for a month?

Suppose you use 57 kWh (kilowatt hours) of electricity at $0.35 per kWH, 91 kWh at $0.26 per kWh, and 82 kWH at $0.24 per kWh. What is your total kHW of electricity used?   Note: Our electricity bills are calculated exactly in this manner, either based on blocks of usage.

A vacuum cleaner draws power at 1200 Watt. If you clean your once a week, 20 minutes for each session. How much does that cost you in 1 year? Assume that the electricity costs is 5 dollar per unit.

How much energy is consumed by a 1.0 kW hair dryer used for 11 min?  E= How much energy is consumed by a 10 W night light left on for 13 hr? E=

A 400-W computer (computer plus monitor) is turned on 8.0 hours per day. If electricity costs ₱ 9.0 per kWh, how much does it cost (in ₱) to run the computer annually?

Compact fluorescent bulbs are much more efficient at producing light than are ordinary incandescent bulbs. They initially cost much more, but last far longer and use much less electricity. According to one study of these bulbs, a compact bulb that produces as much light as a 100 W incandescent bulb uses only 23.0 W of power. The compact bulb lasts 10000 hours, on average, and costs $12.00, whereas the incandescent bulb costs only $0.73, but lasts just 750 hours. The study assumed that electricity costs $0.070 per kilowatt hour and that the bulbs were on for 4.0 hours per day. (A) what is the total cost (including the price of the bulbs) th run and incandescent bulbs for 3.0 years? (B) what is the total cost (including the price of the bulbs) to run compact fluorescent bulbs for 3.0 years? (C) how much do you save over 3.0 years if you use a compact fluorescent bulb instead of an incandescent bulb? (D) what is the resistance of a "100 W" fluorescent bulb? (Remember, it actually uses…

A house is heated by a 24.0-kW electric furnace. The local power company charges $0.150 per kW·h and the heating bill for January is $203. How much time (delta t) day must the furnace have been running on an average January day?

According to the NEC Table 220.55, what would the demand load be for a range rated 16 kW? Select one: a. 8 kW b. 9.6 kW c. 10.4 kW d. 16 kW