Fig. 5-8: T1= 400K
T2= 300k, T3= 200K
The circle represents a reversible engine. During some integral number of
complete cycles the engine absorbs 1200 J from the reservoir at 400 K and performs 200 J
of mechanical work. (a) Find the quantities of heat exchanged with the other reservoirs,
and state whether the reservoir gives up or absorbs heat. (b) Find the change in entropy
of each reservoir, (c) What is the change in entropy of the universe ?​

Write a question about how changing temperature affects the gas inside the sports ball

What sort of waves exhibit the doppler effect?

Beryl states that insulation with the smallest possible thermal conductivity is best to keep a house warm in winter, but worst for keeping a house cool in summer. sapphire insists the reverse is true: low thermal conductivity is good in the summer, but bad in the winter. which one, if either is correct? a. beryl, because low thermal conductivity results in low heat transfer. b. beryl, because low thermal conductivity results in high heat transfer. d. sapphire, because low thermal conductivity results in high heat transfer. e. neither, because low heat transfer is desirable both in summer and in winter.