An acorn fell 5 m from a tree to the ground. What additional information is needed to calculate both the gravitational potential energy of the acorn before it fell and the kinetic
energy of the acorn just before it hit the ground?

Why do electron microscopes have higher resolving power than light microscopes?

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?

A30 kg weight lies on top of a massless piston of area a = 0.01 m2 the exterior air is at a (constant) p =1 atm and t = 27 c. the interior gas is 0.4 moles of (ideal) n2 and it has initial temperature 27.00 degrees c. 1. what is the initial pressure in the interior? a. 29.4 kpa b. 130.7 kpa c. 101.3 kpa the next three questions concern what happens when an amount of heat q is slowly added to the interior, raising the piston by 1 mm and raising the interior temperature to 27.40 c