, 02.12.2019 22:20 Rflaig1129841

# The gyroscope is observed to precess about the vertical axis, with an angular velocity of precession omega, defined as positive for counterclockwise precession as seen from above. find omega in terms of the given quantities

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Physics, 02.02.2019 18:50
In a wind tunnel the speed changes as the cross sectional area of the tunnel changes. if the speed in a 6' x 6' square test section is 100 mph, what was the speed upstream of the test section where the tunnel measured 20' x 20'? use conservation of mass and assume incompressible flow. conservation of mass requires that as the flow moves through a path or a duct the product of the density, velocity and cross sectional area must remain constant; i.e., that ova-constant. a model is being tested in a wind tunnel at a speed of 100 mph if the flow in the test section is at sea level standard conditions, what is the pressure at the model's stagnation point? (a) the tunnel speed is being measured by a pitot-static tube connected to a u- tube manometer. what is the reading on that manometer in inches of water? (b) at one point on the model a pressure of 2058 psf is measured. what is the local airspeed at that point?
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Aclass is designing an experiment about duckweed growing conditions. the hypothesis for the duckweed experiment is, â€śif duckweed is grown at ph 5, then it will grow at the same rate as when grown at ph 7, or normal ph, because it can tolerate mildly acidic environments.â€ť identify the control group in this experiment.