A chain lying on the ground is 10 m long and its mass is 90 kg. How much work (in J) is required to raise one end of the chain to a height of 4 m

Calculate the kinetic energy of earth due to its spinning about its axis. krot = j compare your answer with the kinetic energy of the orbital motion of earth's center of mass about the sun. assume earth to be a homogeneous sphere of mass 6.00 1024 kg and radius 6.40 106 m. the radius of earth's orbit is 1.50 1011 m.

Which of the following represents an upright image? a. -do b. +m c. -m d. +do

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