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Physics, 21.06.2019 22:00
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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What is the orbital period of a spacecraft in a low orbit near the surface of mars? the radius of mars is 3.4Ć106m.
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Asmall grinding wheel has a moment of inertia of 4.0Ć10ā5 kgā
m2 . what net torque must be applied to the wheel for its angular acceleration to be 150 rad/s2 ?
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Physics, 23.06.2019 03:00
Does science support the idea that humans have influenced global warming? provide specific examples that show how two knowledgeable individuals with differing opinions might argue.
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Awave length 30 cm travels with frequency 15 s^-1. what is the speed of the wave? a.4.5 m/s b.9.0 m...
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