Bars (1) are made of a polyimide plastic that has an elastic modulus of 4.3 gpa. bar (2) is a nylon material that has an elastic modulus of 1.5 gpa. each bar has a cross-sectional area of 1450 mm^2.

using l=365 mm and delta=4.8 mm, what magnitude of load p will cause the normal stress in each bar to be the same value?

For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 °f at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater

The higher the astm grain-size number, the coarser the grain is. a)-true b)-false

Which of the following components of a pid controlled accumulates the error over time and responds to system error after the error has been accumulated? a)- proportional b)- derivative c)- integral d)- on/off.