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A turbulent boundary layer is studied in a zero pressure-gradient flow on a flat plate in a laboratory. Atmospheric air at 20-C flows over the plate at 10 m=s. How far from the leading edge can turbulence be expected
(a) if the free-stream fluctuation intensity is low?
(b) If the free-stream fluctuation intensity is high?
it takes 60 joules of work to move 2 coloumbs of charge from point A to point B. what is the potential difference between point A and point B
Illustrate what is the average force exerted on the ball by the bat? Neglect the weight of the bat, since it is so much less than the force of the bat. Choose the direction of the incoming ball as the positive direction.
The speed of an object is known to be 3.0 X 108m/s. You measure the velocity of the object during an experiment, find the percent error associated with these two values
A bronze cannon ball with a mass of 3.5 kg is fired vertically from a small cannon and reaches a height of 25.0 m. find the maximum height reached by the cannon ball
In a home laundry dryer, a cylindrical tub containing wet clothes is rotated steadily about a horizontal axis, what rate of revolution is needed
A pump lifts 320kg of water per hour a height of 3.5m. find the minimum necessary power output rating of the water pump
Illustrate the role of the Sun's differential rotation in the formation of sunspots. Explain (briefly) the 22 year solar cycle, stating its essential features. Estimate the y-component of magnetic force.
1consider a long straight wire with current i running through it. you measure the magnetic field to be b at a
A monochromatic beam of x-rays with a wavelength of 0.290nm is scattered by a metal foil. what is the observed scattering angle
A fan blade rotates with angular velocity given by ?z(t)= ? ? ? t2, where ? = 5.45rad/s and? = 0.835 rad/s3. Calculate the angular acceleration as a function of time
A bicycle wheel has a diameter of 66 centimeter and a mass of 2.0 kilogram. obtain what force would be required on the chain to achieve an acceleration of 5.0 rad/s2
The magnetic energy stored in a certain inductor is 2.50 × 10-2 Joule when the current is 6.00 × 10-2 Amp. Estimate what the inductance
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