Amap suggests that atlanta is 730 miles in a direction of
5.00° north of east from dallas. the same map shows that
chicago is 560 miles in a direction of 21.0° west of north
from atlanta. modeling the earth as flat, use this information
to find the displacement from dallas to chicago.
my concern is about the angle 21 north west of atlanta this is not theta wrt
theta is 21+90 =111. is that

I) a gas contained within a piston-cylinder assembly undergoes two processes, a and b, between the same end states, 1 and 2, where p1 = 10 bar, v1 = 0.1 m3 , u1 = 400 kj and p2 = 1 bar, v2 = 1.0 m3 , u2 = 200 kj: ' process a: process from 1 to 2 during which the pressure-volume relation is pv = constant. ' process b: constant-volume process from state 1 to a pressure of 2 bar, followed by a linear pressure-volume process to state 2. kinetic and potential energy effects can be ignored. for each of the processes a and b, a) sketch the process on a p-v diagram. b) evaluate the work, in kj. c) evaluate the heat transfer, in kj.(ans : qb,12 = -65.0 kj)