The compressor discussed in Illustrations 3.4-4 'and 4.5- 1 is being used to compress air from 1 bar and 290 K to LO bar. The compression can be assumed to be adiabatic, and the compressed air is found to have an outlet temperature of 575 K.

a. What is the value of AS for this process?
b. How much work, W,, is needed per mole of air for the compression?
c. The temperature-of the air

(2) (a) you have a simple circuit that consists of only a battery (δvbat=1.5v) and two resistors with resistance r1=10ω and r2=5ω, connected in series with each other. what is the current running through the battery? (b) you re-arrange your circuit so now r2 is attached in parallel to r1 rather than in series. what is the current running through the battery? (c) you add an additional resistor r3=7ω on the same branch as r2. what is the current running through the battery? (d) what is the power dissipated in r3?