(d) S = 2a, a = S/2 = 4.75 cm, R = r/a = 18 / 4.75 = 3.79
s / a = cos + R 2 sin 2
U p / U p = ( / 2) sin 1 + (cos / R 2 sin 2 )
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V = Vc + (B 2 / 4)(r + a s )
5 4.5 4 s/a 3.5 3 2.5 2 0 60 120 180 Theta 2 1.5 1 0.5 Up 0 0 -0.5 -1 -1.5 -2
4.
Carnot cycle is a reversible process, process 2-3 and 4-1 are also isentropic processes. S3 = S2; S4 = S1 dE = Q - W For a cycle, E = 0, Q = Wnet t = Where:
Q1 = T1 ( S 2 S1 )
W Q1 Q2 = Q Q1
Q2 = T2 ( S3 S 4 ) = T2 ( S 2 S1 ) S