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A laminar boundary layer of 20-C water moving at 0.8 m=s exists on one side of a 2-m-wide, 3-m-long flat plate. At x ¼ 3 m find:
(a) The boundary-layer thickness.
(b) The wall shear stress.
(c) The maximum y-component of velocity.
(d) The drag force.
(e) The displacement and momentum thicknesses.
(f) The flow rate through the boundary layer.
You stand in the earth's magnetic field, directly facing it's horizontal component ( in other words, facing magnetic south). Compute the outward flux through your body's back surface
A +10uC charge is 20cm away from a -40uC charge. Detrmine the field of intensity
a young lady runs for 20 minutes and gives off 128 kcal of heat by evaporation of water from her skin. how much water
A piece of a wire, with the cross-sectional area of 0.5176 mm2 and 2.50 m long, has the resistance 1.28×10-1 ohms. What is the resistivity of the material of the wire
A projectile is launched straight up at 59.5 m/s from a height of 76 m, at the edge of a sheer cliff. Find the maximum height of the projectile above the point of firing
A helicopter is ascending vertically with a speed of 9 m/s. At a height of 200 m above the Earth, a package is dropped from a window. How much time does it take for the package to reach ground.
A microscope with a magnification of 1000 using a converging lens with a focal distance of 1.5 cm for the objective. The tube length given to you is 30 cm long. What should the focal distance of the eyepiece be if you want the eyes to be relaxed whil..
In some places, insect "zappers," with their blue lights, are afamiliar sight on a summer's night. These devices use a highvoltage to electrocute insects.
The power brick for a laptop computer has a power rating of 45 W. What is the rms current in the input coil of the transformer
A generator is made from a set of 50 wire loops of radius 40 centimeter that turn in a uniform 0.0900 T magnetic field. Obtain what angular frequency of rotation is needed to supply a peak emf of 75.0 Volt
A machine part rotates at an angular speed of 0.56 rad/s; its speed is then increased to 3.46 rad/s using an angular acceleration of 0.44 rad/s2, Find the angle through which the part rotates
The nucleus of the polonium isotope 214^po (mass 214u ) is radioactive and decays by emitting an alpha particle, what is the recoil speed of the nucleus that remains after the decay
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