What is the specific heat of 45 g block of aluminum if the temperature is increased by 8.1°C when 207 J of heat are absorbed

What is true for a substance that releases energy

What effect would average population growth have on land usage? a. urban use of land would rise to more than 30 percent of available land. b. industrial use of land would rise to more than 30 percent of available land. c. the percentage of available land used as cropland would stay the same. d. cropland would fall to about 10 percent of available land.

Why protons do not repal in the nucleus