Posted by Dave on Tuesday, April 6, 2010 at 2:51pm.
If the price of electrical enegy is $0.10 per kilowatt *hour, find the cost of using electrical energy to heat the water in a 12.0m * 9.00m * 1.5m swimming pool from 15 degrees C to 27 degrees C.
So the change in temperature is 285.15 , the volume is 162m^3, the specific heat capacity (c) is 4.186 [J/kg*degrees C]. Please and Thanks.

Physics Help Please!  Not gonna get an answer, Tuesday, April 6, 2010 at 4:25pm
You're not going to get an answer here, I've tried this site, and everytime, I get the wrong answer or no one responds.

Physics Help Please!  Chris, Tuesday, April 6, 2010 at 4:34pm
The change in temperature is 12 deg C if it rises from 15 to 27 degrees.
1. Find the mass of water from volume of water times its density.
2. Find the heat in Joule needed from Q=mct where m is mass of water, c is specific heat capacity and t is rise in temperature.
Then the cost.
3. One kilowatt hour is
1000W x 60(min) X 60(sec) Joules.
4. Then find how many of these you need to heat that water.
5. Each one costs $0.1
Answer This Question
Related Questions
 Physics  If the price of electrical energy is $0.10 per kilowatt*hour, what is ...
 Physics/Chemistry  If the price of electrical energy is $0.10 per kilowatt*hour...
 physics  If the price of electrical energy is $0.10 per kilowatt*hour, what is...
 physics  If electrical energy cost 5.00 per kilowatt hour, what will be the ...
 AP Physics 1  If electrical energy costs 12 cents, or $0.12, per kilowatthour...
 Physics  The temperature in an electric oven is 165°C. The temperature at the ...
 physics  Approximately 5.5 X10^6 kg of water fall 50m over Niagara Falls each ...
 physics  Approximately 5.5 X10^6 kg of water fall 50m over Niagara Falls each ...
 Someone please help me with science?  1. Which of the following shows the ...
 Science  Which of these energy changes takes place in a solar cell? A.Heat ...
More Related Questions