Bài 1: Một bình chứa khí nén có thể tích 6 m3 nén ở áp suất 8 bar, nhiệt độ 296K.
- Hãy xác định thể tích khí ban đầu khi chưa bị nén là bao nhiêu?
- Nếu làm lạnh khối khí ban đầu khi chưa bị nén ở nhiệt độ 100c thì cần bình chứa có dung tích là bao nhiêu?

If you were designing a bumper for a car, would you prefer it to exhibit elastic or plastic deformation? why? consider the functions of a bumper in both a minor "fender-bender" and a major collision.

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 finer the gran is. a)-true b)-false