When referring to the two bends required to make an offset in a length of conduit, which of the following is always true?
a. the degree of bend for each must be equal.
b. the degree of bend for each must be different.

Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.