If a town has a power plant with a capacity of 12 megawatts (MW), how many kilowatt hours of electricity can be produced by the plant in a year (assuming it can operate at full capacity for 8,000 hours per year)?

What is the percentage by mass of silicon (si) in iron aluminum silicate (fe3al2(sio4)3)?

Match the following vocabulary terms to their definitions. 1. amount of energy required to change 1 gram of material from the solid to the liquid state at its melting point 2. a measure of the kinetic energy of the particles of a substance 3. the amount of heat energy required to raise the temperature of 1 gram of liquid water from 14.5°c to 15.5°c 4. amount of energy required to change 1 gram of material from the liquid to the gaseous state at its boiling point 5. the amount of energy required to change 1 gram of a substance 1°c a. temperature b. latent heat of vaporization c. latent heat of fusion d. calorie e. specific heat

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains