What happens to the temperature of a substance during a phase change?
a. the temperature increases.
b. the temperature decreases.
c. the temperature remains constant.
d. the temperature fluctuates randomly.

The law of conservation of energy states that energy cannot be created or , energy can be from one substance to another. the first blank is ' destroyed ' and for the second blank is ' transferred '

Avalue that describes how heavy an object is and is related to the force of gravity is

Two polarizers are oriented at 40∘ to each other and plane-polarized light is incident on them. if only 16 percent of the light gets through both of them, what was the initial polarization direction of the incident light?