A Swimming Pool Heater Has to Be Able to Raise

question 3

Multiple Choice

A swimming pool heater has to be able to raise the temperature of the 50 000 gallons of water in the pool by 12.0 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)6.98E+2 kWh
• B)2.65E+3 kWh
• C)2.21E+2 kWh
• D)2.65E+4 kWh
• E)2.65E+2 kWh

---

Definitions:

Accounts Receivable

The balance of money owed to a company by its customers for goods or services delivered or used but not yet paid for.

Credit

An entry recording an increase in assets or decrease in liabilities and equity on the company’s balance sheet, or the provision of goods or services in exchange for a promise of payment in the future.

Equity

The value of an ownership interest in property, including shareholders' equity in a company, represented by the assets minus liabilities.

Revenues

The total amount of money generated by the sale of goods, services, or other income for a company before any expenses are deducted.