Aswimming pool heater has to be able to raise the temperature of the 40 000 gallons of water in the pool by 10.0 c°.

how many kilowatt-hours of energy are required?

(one gallon of water has a mass of approximately 3.8 kg and the specific heat of water is 4 186 j/kg⋅°c.)
a. 1 960 kwh
b. 1 770 kwh
c. 330 kwh
d. 216 kwh

b. 1 770 kWh

Explanation:

The heat needed to change the temperature of a certain amount of a substance is given by:

Here m is the mass of the susbtance, C is the specific heat of the substance and is the temperature change

Recall that one watt hour is equivalent to 1 watt (1 W) of power sustained for 1 hour. One watt is equal to 1 J/s. So, one watt hour is equal to 3600 J and one kilowatt hour is equal to

i am pretty sure it is c because when people are closer together, they cannot move as freely. picture being in a mostly full elevator, for instance. the people are right next to you, and you can barely move.

attach the statements so i can answer : )