An object is dropped on earth from a height of 15 m. how long did it take for the object to reach the ground? a) 1.2 seconds b) 1.5 seconds c) 1.8 seconds d)3.0 seconds

The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?

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.)

Which of the following statement is false ? a. batteries should never be stored on metal trays or outside in the elements)b, battery acid cannot be neutralized)c. do not stack batteries on top of each other)d. never put a damaged battery in a dumpster. i