How many pennies does it cost to use your 956-w microwave for 36 minutes every day for a week if your electric company charges 9 cents per kwh?

What property is a characteristic of a substance that can be observed and does not change the identity of the substance

Smallest intensity of a stimulus that you can detect 50 percent of the time is

Hydroelectricity provides about 7 percent of the electricity generated in the united states. (a) explain how a hydroelectric power plant converts energy stored in water into electricity. (b) identify two factors that determine the amount of electricity that can be generated by an individual hydroelectricity power plant. (c) describe the two main types of land-based hydroelectric power plants. (d) describe two economic advantages and two environmental disadvantages of hydroelectricity.