A 2.00 kg-ball has zero kinetic and potential energy. Ernie drops the ball into a 10.0-m deep well. Just before the ball hits the bottom, the sum of its kinetic and potential energy is:
a. zero.
c. -196 J.
b. 196 J.
d. 392 J.
Question 2
Consider a Carnot cycle starting at the state of highest pressure and smallest volume. Call the isothermal expansion from this state step 1, the adiabatic expansion which follows step 2, the isothermal compression that then follows step 3, and the adiabatic compression which returns the system to the initial state step 4 . In which steps does the internal energy of the system increase?
a. 1 and 2
c. 1 and 3
b. 3 and 4
d. 2 and 4
Energy flows in a typical gasoline-powered car
Kinetic Energy
Comparison of energy consumption in developing and industrialized nations
World Total Energy Consumption by Fuel Type
Instillation of Eye Drops
Energy homeostasis is regulated primarily by the brain, gastrointestinal tract, other organ systems,