Which of the following is the best reason to rest muscle groups between workouts?
a. it allows the muscles to store more energy.
b. it allows you to focus on other muscle groups.
c. it allows the muscles time to heal.
d. it allows the muscles to properly overload

Atank has a shape of a cone with a radius at the top of 2 m and a height of 5 m. the tank also has a 1 m spout at the top of the tank. the tank is filled with water up to a height of 2 m. find the work needed to pump all the water out the top of the spout. (use 9.8 m/s2 for g and the fact that the density of water is 1000 kg/m3.)