diving to work one morning, you get a flat tire. when using the car jack, you apply 120 N of force to the jack and the jack in turns applies 2000 N of force to lift the car up. what is the mechanical advantage of the jack

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

Give an example in which the electrical energy changes to light energy

Astone is thrown with a speed v0 and returns to earth, as the drawing shows. ignore friction and air resistance, and consider the initial and final locations of the stone. which one of the following correctly describes the change δpe in the gravitational potential energy and the change δke in the kinetic energy of the stone as it moves from its initial to its final location? options a.δpe = 0 j and δke = 0 j b.δpe is positive and δke is negative c.δpe = 0 j and δke is positive d.δpe is negative and δke is positive e.δpe = 0 j and δke is negative