Mass Conservation, Kinematics & Momentum
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Question 1 of 3
1. Question
A hair dryer is a duct of constant diameter. in which a few layers of resistors are placed electrical. A small fan draws air in and force it to pass through the resistors, where it heats up. If the density of the air is 1.20 kg/m3 at the entrance and 1.05 kg/m3 at the exit, determine the percentage increase in velocity of the air as it flows through the dryer.
CorrectIncorrect -
Question 2 of 3
2. Question
A two-dimensional, incompressible and stationary field is given of velocity by the following components in the xy plane:
u = 1.1 + 2.8x + 0.65y
v = 0.98 – 2.1x – 2.8yCalculate the acceleration field (find expressions for the components ax and ay), of the acceleration, and calculate the acceleration axy at the point
(x, y) = (2, 3).CorrectIncorrect -
Question 3 of 3
3. Question
A water jet of 100 ft3/s moves in the positive x direction at 20 ft/s. The plane hits a divider (Splitter) at rest, so that half of the flow is diverted towards upwards at 45° and the other half is directed downwards, and the two The flows have a final velocity of 20 ft/s. Discard the effects of gravitation, determine the x and z components of the force necessary to hold the divider in place against force of the water.
CorrectIncorrect