Question

(a) During 1 complete cycle of an ideal heat engine performs 250J of work and transfers 150J of hear ro a low reservoir, which has a temprature of 100 C ?

i)how much heat enters the engine (|Qh|)

ii)what is the efficiency of the ideal engine?

iii)what is the temperature of the high temperature reservoir ?

(b) When temperature of an aluminum coin is increase by 100C and its circumference increases by %23

i)find the coefficient of linear expansion

ii)find the percent increase of the area if the face

iii)find the percent increase of the volume

iv)find the percent increase of thickness

v)find the percent increase mass

(c) A sample of gas taken through the cyclic process below, where Ta is 200 K

i)how many moles of gas are in the sample

ii)find the temperature at point C

iii)find the net work done over the complete cycle. is it added or removed

the figure belongs to part (c)

Answer 1

too T 2 Co a) heat eny Hus 了 て 7. v3% I O nero 2. xloo

:fo. change 84% 1 % change in man :.。 e):) At尸)个.dooK P: 5 Ta