Engineering, 03.02.2020 23:45 brendacauani12345
Five moles of nitrogen are expanded from an initial state of 3 bar and 88c to a final state of 1 bar and 88°c. you may consider n2 to behave as an ideal gas. answer the following questions for each of the following reversible processes: (a) the first process is isothermal expansion. (i) draw the path on a po diagram and label it path a. (ii) calculate the following: w. q。au_ah. (b) the second process is heating at constant pressure followed by cooling at constant volume. (i) draw the path on the same po diagram, label it path b (ii) calculate the following te, qauah
Answers: 1
Engineering, 04.07.2019 18:20
Air flows over a heated plate àt a velocity of 50m/s. the local skin factor coefficient at a point on a plate is 0.004. estimate the local heat transfer coefficient at this point.the following property data for air are given: density = 0.88kg/m3 , viscosity 2.286 x 10 ^-5 kgm/s , k = 0.035w/mk ,cp = 1.001kj/kgk. use colburn reynolds analogy.
Answers: 1
Engineering, 04.07.2019 19:10
In general, how do thermosetting plastics compare to thermoplastics in mechanical and physical properties?
Answers: 3
Engineering, 04.07.2019 19:10
An engine, weighing 3000 n, is supported on a pedestal mount. it has been observed that the engine induces vibration into the surrounding area through its pedestal at the maximum operating speed. determine the stiffness of the dynamic vibration absorber spring in (n/m) that will reduce the vibration when mounted on the pedestal. the magnitude of the exciting force is 250 n, and the amplitude of motion of the auxiliary mass is to be limited to 2 mm note: in this question type-in right numbers, no decimals, no fractions, no unit. approximate to right number if needed
Answers: 3
Engineering, 04.07.2019 19:20
Consider airflow over a flat plate of length l = 1.5 m under conditions for which transition occurs at le = 0.9 m based on the critical reynolds number, re,e = 5 x 10. evaluating the thermophysical properties of air at 400 k, determine the air velocity. (hint: use the tables to find the properties of air)
Answers: 3
Five moles of nitrogen are expanded from an initial state of 3 bar and 88c to a final state of 1 bar...
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