If the current in the copper conductor flows from the close grey rail to the fargrey rail (so in the up/rightwards direction), what direction is the force on thecopper conductor

Which statement correctly describes the relationship between frequency and wavelength?

When an object is heated it contracts. a. true b. false

2kg of refrigerant 134a undergoes a polytropic process in a piston-cylinder assembly from an initial state of saturated vapor at 2 bar to a final state of 12 bar, 80 degree c. a)determine the work for the process in kj. b)sketch the process on a p-v diagram.