People often stick notes and other objects to refrigerator doors, using magnets. A student tried to do this, but the object
he wanted to stick to the refrigerator fell to the floor.

The density of a liquid could be found by using

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

How many neutrons does element x if it’s atomic number is 28 and its mass number is 87