The reason for C_{p} greater than C_{v} is very simple. This can be easily demonstrated by First law of thermodynamics. At constant Pressure dQ=dU+P.dV----(1) Where as, At Constant Volume, dQ=dU+P.dV Since dV=0 Therefore dQ=dU ---(2). Therefore C_{p}=dU+P.dV And C_{v}=dU Therefore using the above relation C_{p} is greater than C_{v}. Physical Meaning of why C_{p} is greater than C_{v}: At constant volume, heat is required only to increase the internal energy of system while At constant Pressure heat is needed for increasing Internal energy as well as for doing the work to displace the piston of system through a distance. Therefore C_{p} has a greater value than C_{v}. Hope it helps!! Cheers!! Posted by Guru Prasad Sin...(student)on 8/3/12 This conversation is already closed by Expert

The reason for C_{p} greater than C_{v} is very simple. This can be easily demonstrated by First law of thermodynamics. At constant Pressure dQ=dU+P.dV----(1) Where as, At Constant Volume, dQ=dU+P.dV Since dV=0 Therefore dQ=dU ---(2). Therefore C_{p}=dU+P.dV And C_{v}=dU Therefore using the above relation C_{p} is greater than C_{v}. Physical Meaning of why C_{p} is greater than C_{v}: At constant volume, heat is required only to increase the internal energy of system while At constant Pressure heat is needed for increasing Internal energy as well as for doing the work to displace the piston of system through a distance. Therefore C_{p} has a greater value than C_{v}. Hope it helps!! Cheers!! Posted by Guru Prasad Sin...(student)on 8/3/12 This conversation is already closed by Expert

The reason for C_{p} greater than C_{v} is very simple. This can be easily demonstrated by First law of thermodynamics. At constant Pressure dQ=dU+P.dV----(1) Where as, At Constant Volume, dQ=dU+P.dV Since dV=0 Therefore dQ=dU ---(2). Therefore C_{p}=dU+P.dV And C_{v}=dU Therefore using the above relation C_{p} is greater than C_{v}. Physical Meaning of why C_{p} is greater than C_{v}: At constant volume, heat is required only to increase the internal energy of system while At constant Pressure heat is needed for increasing Internal energy as well as for doing the work to displace the piston of system through a distance. Therefore C_{p} has a greater value than C_{v}. Hope it helps!! Cheers!! Posted by Guru Prasad Sin...(student)on 8/3/12 This conversation is already closed by Expert

explain why air temperature reading are always taken with thermometer in the shade? Posted by Kamalbista(student)on 5/12/12

explain why air temperature reading are always taken with thermometer in the shade? Posted by Kamalbista(student)on 5/12/12

explain why air temperature reading are always taken with thermometer in the shade? Posted by Kamalbista(student)on 5/12/12

The air temperature reading is always taken in shade because due to the exposure of sunlight thermometer reading increases than the real temperature. Posted by Pavithra(student)on 5/12/13

The air temperature reading is always taken in shade because due to the exposure of sunlight thermometer reading increases than the real temperature. Posted by Pavithra(student)on 5/12/13

The air temperature reading is always taken in shade because due to the exposure of sunlight thermometer reading increases than the real temperature. Posted by Pavithra(student)on 5/12/13