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Two long barges are moving in the same direction in still water, one with v1 = 10km/h and the other with v2 = 20 km/h. While they are passing each other, coal is shoveled from the slower to the faster one at a rate of 1000 kg/minute. How much additional force must be provided by the driving engines of the faster barge if it is to maintain a constant forward speed? Assume that the shoveling is always perfectly sideways, and that the frictional forces between the barges and the water do not depend on the mass of the barges.
The boats are same lengths widths etc. Their dimensions are same.
The crank handle moves with a constant tangential speed of 1.20 m/s on its circular path. The rope holding the bucket unwinds without slipping on the barrel of the crank. Find the linear speed with which the bucket moves down the well.
The magnetic flux through a circuit is reduced from 35 Tm^2 to 5 Tm^2 in 0.1s. The current induced in the circuit is 3.6 mA. What is the resistance to the circuit
Water at a gauge pressure of P = 3.4 atm at street level flows into an office building at a speed of 0.90m/s through a pipe 5.6 cm in diameter. find the gauge pressure in the pipe on the top floor
A 35-g bullet B is fired with a velocity of 400 m/s into the side of a 3-kg square panel suspended as shown from a pin at A. Knowing that the panel is initially at rest, determine the components of the reaction at A after the panel has rotated 90°..
A barbell spins around a pivot at its center . The barbell consists of two small balls, each with mass m = 460 grams, at the ends of a very low mass rod whose length is L = 24 cm. The barbell spins with angular speed ω = 50 radians/s.
A 124-kg balloon carrying a 22-kg basket is descending with a constant downward velocity of 19.3m/s A 1.0-kg stone is thrown from the basket by an initial velocity of 12.1m/s perpendicular to the path of the descending balloon, as gauged relative to ..
A singly charged 7Li ion has a mass of 1.16 x 10-26 kilogram. It is accelerated through a potential difference of 471 V, Evaluate what is the radius of its path
Two particles are created in a high-energy accelerator and move off in opposite directions. What is the speed of the second particle
What is the turntable rotation angular velocity
A small sphere is released on a loop-de-loop device and it rolls without slipping. How high above the bottom of the loop should the sphere be released if when it is at the top of the loop the normal force acting on it is equal to its own weight? The ..
What is the mass of a puppy that sits on the other piston and balances the person?
How much work is required to accelerate a proton from rest up to a speed of 0.995c? What would be the momentum of this proton?
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