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Use Bernoulli's equation to estimate the upward force on an airplane's wing if the average flow speed of air is 191 m/s above the wing and 160 m/s below the wing. The density of the air is 1.1 kg/m3 and the area of each wing surface is 27 m2.
A solenoid is to have an inductance of 0.274 mH, a cross-sectional area of 5.73 10-4 m2, and a length of 37.9 cm. How many turns per unit length should it have
A 150 MW laser pulse is focused with a lens to a diameter of 1.39 %u03BCm. What is the laser beam's electric field amplitude at the focal point
A 0.300 kg puck, initially at rest on a horizontal, frictionless surface, is struck by a 0.200 kg puck moving initially along the x axis with a speed of 2.00 m/s. After the collision, the 0.200 kg puck has a speed of 1.00 m/s at an angle of ? = 55..
Dave needs to get groceries from the store, which is a distance D = 1.1km east of his house. How long in seconds does it take dave to reach the store
A space station, in the form of a wheel121m in diameter, rotates to provide an "artificial gravity" of2.70m/s2for persons who walk around on the inner wall of the outer rim. Find the rate of the wheel's rotation in revolutions per minute that will pr..
a hole punch has a diamter of 8.0 mm and presses onto ten sheets of paper with a force of 6.7 kN, If each sheet of paper is of thickness .20 mm, what is the shear stress
The equation of a transverse wave traveling along a very long string is y = 5.5 sin( 0.055?x + 36.0?t ), What is the maximum transverse speed of a particle in the string
A rock is thrown horizontally with a speed of 19 m/s from a vertical cliff of height 30 m. How far will it land from the base of the cliff
Two adjacent natural frequencies of an organ pipe are found to be 450 Hz and 495 Hz. What is the length of the pipe
Consider a heat engine that operates between thermal reservoirs at 450 K and 232 K. Suppose the engine does 4500 J of work while it expels 90 J of energy to the cold reservoir. Is this engine possible in the real world
the two stars in a binary star system have masses 1.7 x 10 ^ 30 kg and 5.8 x 10 ^ 30kg. They are separated by 2.1 x 10 ^ 12m, What is the speed of the heaviest star
In the winter, a thin film of ice (nice = 1.31) can form on a window (nglass = 1.50). Calculate the minimum thickness of the film
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