Apiston–cylinder device initially contains 0.07 m^3 of nitrogen gas at 130 kpa and 120 degree c. the nitrogen is now expanded polytropically (pvn=c) to a state of 100 kpa and 100 degree c. find the value of ‘n’ (in pvn=c) and determine the boundary work done during this process.

If this plastic cup is heated to its melting point, what will eventually happen to all the particles in the plastic? a. the particles will begin to move enough that they slide past each other. b. bonds will form and the liquid will become a solid. c. the spaces between the particles will get smaller. d. the particles will change state and become a crystalline solid.

Afeather of mass 0.001 kg falls from a height of 2 m. under realistic conditions, it experiences air resistance. based on what you know about friction, what can you say about the kinetic energy of the feather as it reaches the ground? acceleration due to gravity is g = 9.8 m/s2. a. ke < 0.0196 j b. ke = 00196 j c. je = 0 j d. ke > 0.0196 j

Which notation is used to represent an alpha particle? a. b. c. d.