Problem $1-2$: Fill in the blank by choosing from the following set:

$($Hear rescrvoin, heat pump, hear engine, heat supplied, high beat output, low heat input, heat rejected, refriger tator, stedy process, energy balance, maci flow, specific properties, heat tranvfor, adiabptic, internal, potential, Entropy, ipcreases, decrases, constant, zero, velocisy. pressiare, temperature, Carnot principles, perpetual$-$motion machine$)$

$1-$ The second law of thermodynamics states that no can produce a net amount of work while exchanging heat with a single reservoir only.

$\frac{?}{\text{b}\text{a}\text{r}}(20)$

$2.$ Any device that violates the fint or the second law of thermodynamics is called a

$3$forms the basis for establishing a thetmodynamic temperature scale related to the heat transfers between a reversible device and the high$-$and low$-$temperature reservoirs.

$4-$ The thermal efficiency of a heat engine is defined as ${}_{ch}=1-\frac{Q_h}{Q_{11}},$ where $Q_n$ is the amount of to the engine, and $Q_x$ is the amount of by the enginc.

$5.$ The temperatures on the Kelvin scale are called temperatures.

$6-$ If the pressure of a substance is increased during a boiling process, the temperature will

$7-$ In an Iso$-$thermal process, the internal energy

$8.$ Bodies that can absorb or reject finite amounts of heat isothermally are called.......................

$9.$ If a gas is heated against a pressure, keeping the volume constant, then work done will be equal