How much total energy is dissipated in 10. seconds
in a 4.0-ohm resistor with a current of
0.50 ampere?
(1) 2.5 j (3) 10. j
(2) 5.0 j (4) 20. j

Amass weighing 24 pounds, attached to the end of a spring, stretches it 4 inches. initially, the mass is released from rest from a point 8 inches below the equilibrium position. find the equation of motion. (use g = 32 ft/s2 for the acceleration due to gravity.)