Consider the following experimenta group of students is doing an experiment to determine how the weight of an obiecthung from a spring affects the length of the spring. the group used a 0.5cm diametersteel spring with an initial length of 10 cmthe questions are on the picturethere are 2 questions

Contrast the force of gravity between these pairs of objects a 1 kg mass and a 2 kg mass that are 1 m apart and two 2 kg masses that are 1 m apart

Idon’t quite understand this problem

An insulated 40 ft^3 rigid tank contains air at 50 psia and 120°f. a valve connected to the tank is now opened, and air is allowed to escape until the pressure inside drops to 25 psia. the air temperature during this process is kept constant by an electric resistance heater placed in the tank. determine the electrical work done during this process.