A gas within a piston–cylinder assembly undergoes a thermodynamic cycle consisting of three processes: Process 1–2: Constant volume V1 = 1 m3, p1 = 1 bar, to p2 = 3 bar, U2 − U1 = 400 kJ. Process 2–3: Constant pressure expansion to V3 = 2 m3. Process 3–1: Adiabatic compression, with W31 = −1120 kJ. There are no significant changes in kinetic or potential energy. Determine the net work for the cycle, in kJ, and the heat transfers for Processes 1–2 and 2–3, in kJ. Is this a power cycle or refrigeration cycle? Explain.

he made 11 calls in one day

dec 23, 2016 - a load of bricks weighing 680 n a distance of 10 m across a parking lot. if if the worker pushes the cart with a constant force of 209 n, what work= force x distance = 220 n x 10 m = 2200 n.m = 2200 j i don't know where the person got it from, but the initial part, work= force x distance me.

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force