A sample of monatomic ideal gas occupies 5.00 L at atmospheric pressure and 300 K (point A). It is warmed at constant volume to 3.00 atm (point B). Then it is allowed to expand isothermally to 1.00 atm (point C) and at last compressed isobarically to its original state. (a) Find the number of moles in the sample. moles (b) Find the temperature at point B. K (c) Find the temperature at point C. K (d) Find the volume at point C. L (e) Now consider the processes A → B, B → C, and C → A. Describe just how to carry out each process experimentally. This answer has not been graded yet. (f) Find Q, W, and ΔEint for each of the processes. Q (kJ) W (kJ) Eint (kJ) A → B B → C C → A (g) For the whole cycle A → B → C → A, find Q, W, and ΔEint. Q = kJ W = kJ Eint = kJ

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 710 n/m. it is initially at rest on an inclined plane that is at an angle of θ = 23° with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is μk = 0.19. in the initial position, where the spring is compressed by a distance of d = 0.16 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. a) what is the block's initial mechanical energy? b) if the spring pushes the block up the incline, what distance, l, in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.

Ablock having mass m slides down an inclined plane. the force of friction between the block and the inclined plane is f, the block's weight is m g, and the normal force is n. (a) draw a free – body force diagram showing the forces acting on the block. (b) write down all relevant newton’s equations for a given situation.