A traffic study found a linear relationship between speed and density. They measured the free-flow speed of 71.2 mph and a jam density of 122 veh/mi.

a. What is the equation for the relationship between speed and density?

b. What is the equation for the relationship between flow and speed?

c. What is the equation for the relationship between flow and density?

d. What is the capacity of the highway?

The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite

The thermal expansion or contraction of a given metal is a function of the f a)-density b)-initial temperature c)- temperature difference d)- linear coefficient of thermal expansion e)- final temperature f)- original length

An open feedwater heater operates at steady state with liquid entering at inlet 1 with t? = 40°c and pl = 1 .2 mpa. water vapor att2-200°c and p2 = 1.2 mpa enters at inlet 2. saturated liquid water exits with a pressure of pa 1.2 mpa. neglect heat transfer with the surroundings and all kinetic and potential energy effects, determine the mass flow rate of steam at inlet 2 if the mass flow rate of liquid water at inlet 1 is given as 2 kg/s.