Engineering, 16.10.2019 01:20 devin3634
The strength and stability of tires may be enhanced by heating both sides of the rubber (k= 0.14 w/m·k, α= 6.35 × 10-8m2/s) in a steam chamber for which [infinity] t[infinity]= 200°c. in the heating process, a 20-mm-thick rubber wall (assumed to be untreaded) is taken from an initial temperature of 19°c to a midplane temperature of 120°c. if steam flow over the tire surfaces maintains a convection coefficient of h= 200 w/m2·k, how long will it take to achieve the desired midplane temperature?
Answers: 2
Engineering, 03.07.2019 15:10, breannaasmith1122
Two flowing streams of argon gas are adiabatically mixed to form a single flow/stream. one stream is 1.5 kg/s at 400 kpa and 200 c while the second stream is 2kg/s at 500 kpa and 100 ? . it is stated that the exit state of the mixed single flow of argon gas is 150 c and 300 kpa. assuming there is no work output or input during the mixing process, does this process violate either the first or the second law or both? explain and state all your assumptions.
Answers: 1
Engineering, 04.07.2019 18:10, jadeochoa4466
The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false
Answers: 2
Engineering, 04.07.2019 18:20, krojas015
Asolid cylinder is concentric with a straight pipe. the cylinder is 0.5 m long and has an outside diameter of 8 cm. the pipe has an inside diameter of 8.5 cm. the annulus between the cylinder ad the pipe contains stationary oil. the oil has a specific gravity of 0.92 and a kinematic viscosity of 5.57 x 10-4 m2/s. most nearly, what is the force needed to move the cylinder along the pipe at a constant velocity of 1 m/s?
Answers: 3
The strength and stability of tires may be enhanced by heating both sides of the rubber (k= 0.14 w/m...
Mathematics, 14.07.2019 03:30
Mathematics, 14.07.2019 03:30
Biology, 14.07.2019 03:30
Mathematics, 14.07.2019 03:30
Biology, 14.07.2019 03:30
Social Studies, 14.07.2019 03:30