A Dam Is Used to Block the Passage of a River

question 12

Multiple Choice

A dam is used to block the passage of a river and to generate electricity. Approximately 5.73 * 10⁴ kg of water fall each second through a height of 19.6 m. If 85 % of the gravitational potential energy of the water were converted to electrical energy, how much power would be generated?

• A)9.36 * 10⁶ W
• B)1.52 * 10⁷ W
• C)1.08 * 10⁷ W
• D)1.35 *10⁸ W
• E)4.68 * 10⁶ W

---

Definitions:

Market Demand

The total quantity of a good or service that all consumers in the market are willing and able to purchase at different prices.

Market Supply

The total quantity of a good or service that all producers in a market are willing and able to sell at various price levels.

Demand Curve

A graphical representation that shows the quantity of a product or service desired by buyers at various price levels.

Tax

Mandatory financial charges or other types of levies imposed upon a taxpayer by a governmental organization in order to fund government spending and various public expenditures.