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Water at 100° is flowing through a long pipe of radius 1 rapidly enough so that we may assume that the temperature is 100° at all points. At t=0, the water is turned off and the surface of the pipe is maintained at 40° from then on (neglect the wall thickness of the pipe). Find the temperature distribution in the water as a function of r and t. Note that you need only consider a cross section of the pipe.
An arrow is fired with a speed of 23 m/s at a block of Styrofoam resting on a smooth surface. The arrow penetrates a certain distance into block before coming to rest relative to it. All through this process the arrow's deceleration has the magnit..
A 360 kg piano slides 3.1 m down a 25 degree incline and is kept from accelerating by A man who is pushing back on it parallel to the incline, Determine the work done on the piano by the man
A piano tuner hears one beat every 3.1 seconds when trying to adjust two strings, one of which is sounding 440 Hz, How far off in frequency is the other string
The pilot of an airplane notes that the compass indicates a heading due west. The airplane's speed relative to the air is 120 km/h. Find the velocity of the airplane relative to the ground
A proton is passing through a uniform, 0.500-T magnetic field and is directed along the x axis. find the pitch of the helix
A 5.0 kg object is moving to the right at 4 m/s and collides with another object of mass 10 kg moving to the left at 5 m/s. Find the momentum of the combined object
A hot-air balloon has just lifted off and is rising at the constant rate of 2.4m/s. how high is she when the camera reaches her
A 55kg pole vaulter running at 10m/s vaults over the bar. If the vaulter's horizontal component of velocity over the bar is 1.10m/s and air resistance is disregarded, how high was jump.
It is said that Galileo discovered a basic principle of the pendulum - that period is independent of the amplitude - by using his pulse to time the period of swinging lamps in the cathedral as they swayed in the breeze. assume that one oscillation..
Consider a disk of radius R = 41.0 cm and thickness t = 1.1 cm, with a nonuniform volume charge density given by ? = A, If A = 510 ?C/m4, what is the total charge of this disk
Assuming all the energy is retained by the hammer head, evaluate how much will its temperature increase? (Chead=0.11 kcal/kg degrees C) 1/2 m v^2 = mc Deltatemp solve for deltaTemp.
a car moving at 10.0 m/s encounters a bump that has a circular cross-section with radius of 30.0m, What is normal force exerted by the seat of the car
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