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Question: In order to estimate the drag force on an airplane wing, model the wing as a half-cylinder for the leading edge and as two flat plates for the upper and lower surfaces. Estimate the drag force for a wing approximately 15 cm thick, 10 m long and 2 m wide on an airplane traveling at 100 m/s in air at 0°C. The density of the air is 1.3 kg/m3 and viscosity is .023 CP at this temperature.
Explain what effect will increasing the number of lines per mm have on the grating constant of a diffraction grating
Assume the volume of the tank and the temperature of gas remain constant all through this operation.
A 6080 kg space probe moving nose-first toward Jupiter at 105 m/s relative to the Sun fires its rocket engine, ejecting 80.0 kg of exhaust at a speed of 253 m/s relative to the space probe. What is the final velocity of the probe?
A car of mass 1,000 kg starts from rest and accelerates to a velocity of v = 24 m/s in a time interval of ?t = 11 seconds. what force is needed for this acceleration
Unpolarized light with an intensity of 980 W / m2 is incident on a polarizer with an unknown axis. What is the angle between the axes of the polarizers
a battery produces 41.9v when 7.20a is drawn from it and 48.7v when 1.90a is drawn. what is the internal resistance of
You walk 40m to the North then turn 50 degrees to your right and then walk another 30m. How far are you from where you originally started
Suppose a particle with mass m is released from rest in a uniform gravity g, write down the relativistic equation of motion and find an expression that gives the relationship between velocity and time
An airtight box has a removable lid of area 2.46 × 10-2 m2 and negligible weight. find the magnitude of the force required to pull the lid off the box
What is the resulting compressional force on Earth. Two loudspeakers, A and B, are driven by the same amplifier and emit sinusoidal waves in phase.
A daredevil is shot out of a a cannon at an angle of 40 degrees above the horizontal with an initial speed of 18 m/s. At what height above the cannon should the net be placed in order to successfully catch the daredevil
It is Possible for a large star (one greater than 1.4 Solar masses) to Gravitationally collapse, crushing itself into a tiny neutron star 50 km in diameter, WHat would be the spin rate for the resulting Neutron Star
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