P=change in E/t
Change in E=p*t
=15*3
=45
The answer is 45J.
The volume of a cube is given by:

where L is the measure of each side (which corresponds to its width, since all sides of a cube are equal).
Plugging the data of the problem, L=32.1 cm, inside the equation, we find the volume:

B = although each ray of light follows the law of reflection,
Answer:
Eighteen percent
Explanation:
Eighteen percent of all electricity in the US is sourced from renewable energy ,which includes solar , wind, and hydroelectric dam.
Hydroelectric power is currently the largest producer of renewable electricity in the US, generating around 6.5% of the nation's total electricity as well as 45.71% of the total renewable electricity generation.The United States is the fourth largest producer of hydroelectricity in the world after China, Canada and Brazil.
Explanation:
solar energy is the answer