Which describes the wavelength of a wave?

a.
the distance from the crest to the rest position

b.
the distance from one point on a wave to the next similar point

c.
the distance from the crest to the trough

d.
the distance from the rest position to the trough

8.29 two streams containing pyridine and acetic acid at 25°c are mixed and fed into a heat exchanger. due to the heat-of-mixing effect, it is desired to reduce the temperature after mixing to 25°c using a stream of chilled ethylene glycol as indicated in the diagram. calculate the mass flow rate of ethylene glycol needed. the heat capacity of ethylene glycol at these conditions is approximately 2.8 kj/(kg k), and the enthalpy change of mixing (δmixh) is given below.