Four identical metal plates are painted either black or white and have either a dull or shiny surface. They are heated to the same temperature.

Which plate radiates thermal energy at the greatest?
A. the plate that is dull and black
B. the plate that is dull and white
C. the plate that is shiny and black
D. the plate that is shiny and white

What type of electromagnetic wave is used in security pens? a. x-rays c. microwaves b. visible light d. ultraviolet radiation select the best answer from the choices provided

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.

Does the asteroid belt revolve around the sun?