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The drag on the hull of a ship depends in part on the height of the water waves produced by the hull. The potential energy associated with these waves therefore depends on the acceleration of gravity, g. Hence, we can state that the wave drag on the hull is D = f (p8, V8, c, g) where c is a length scale associated with the hull, say, the maximum width of the hull. Define the drag coefficient as CD = D/q8c2. Also, define a similarity parameter called the Froude number, Fr= V/vgc. Using Buckingham's pi theorem, prove that CD =/(Fr).
A 5.65 kg object is released from rest while fully submerged in a liquid. The liquid displaced by the submerged object has a mass of 2.5 kg. How far and in what direction does the object move in 0.200 s, assuming that it moves freely and that the ..
A positron undergoes a displacement ?r = 8.0 ihat - 8.0 jhat + 6.0 khat, What was the positron's former position vector
A76 kg window cleaner uses a18 kg ladder that is 6.0 m long. He places one end on the ground2.9 m from a wall, rests the upper endagainst a cracked window, What is the angle of this force on the ladder
The surface waters of tropical oceans are at a temperature of 28?C while water at a depth of 1200 m is at 3?C. What is the maximum efficiency possible of such a heat engine
A solid, uniform disk of radius 0.250 m and mass 45.1 kg rolls down a ramp of length 5.20 m that makes an angle of 13.1° with the horizontal. Find the speed of the disk's center of mass when it reaches the bottom of the ramp
An ambulance with a siren emitting a whine at 1600 Hz overtakes and passes a cyclist pedaling a bike at 2.44 m/s. How fast is the ambulance moving
A 5g bullet leaves the muzzle of a rifle with a speed of 320 m/s. What force (assumed constant) is exerted on the bullet while it is traveling down the 0.81 m long barrel of rifle.
A 0.39 V potential di?erence is maintained across a 1.7 m length of tungsten wire that has a cross-sectional area of 0.85 mm2, What is the current in the wire
A black, totally absorbing piece of cardboard of area A = 3.0 cm2 intercepts light with an intensity of 3.9 W/m2, What radiation pressure is produced on the cardboard by the light
In April 1974, John Massis of Belgium managed to move two passenger railroad cars. He did so by clamping his teeth down on a bit thatwas attached to the cars with a rope and then leaning backward while pressing his feet against the railway ties. T..
1 a bug is on the rim of a disk of diameter 14 in that moves from rest to an angular speed of 78 revmin in 4.4 s.a.
Illustrate what are the nominal and effective interest rates? Also determine the effective interest rate that a typical credit card issuer charges today.
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