Determine the force needed to stretch a 30cm spring with a spring constant of 50N/m to a length of 35cm.

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

The transfer of heat through the movement of a gas or liquid a. convection b. conduction c. radiation

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