Ametal has a strain hardening exponent of 0.22. at a true strain of 0.2, the true stress is 2 psi (a) determine the stress-strain relationship for this material. (b) determine the true ultimate tensile strength for this material. (c) what is the significance of strain hardening exponent in materials processing?

Acompressor compresses a gas, a pump compresses a liquid. for a given pressure ratio, why does it take more work to compress a gas in a compressor than a liquid in a pump? a)- for a given pressure ratio the average specific volume for a gas is much higher than the average specific volume for a liquid. b)- there is no difference. the only difference is the amount of heat generated (not work) c)- for a given pressure ratio the average volurge for a gas is much higher than the average volume for a liquid. d)-there is no difference