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Water flowing in a horizontal pipe is at a pressure of 1.55 105 Pa at a point where its cross-sectional area is 6.00 m2. When the pipe narrows to 0.400 m2, the pressure drops to 1.16 105 Pa.
(a) Find the water's speed in the wider pipe.
(b) Find the water's speed in the narrower pipe.
There are approximately 109 million TVs in the United States. Each uses, on average, how much money is spent every day in keeping the TVs turned on
A train is travelling up a 3.2 degree incline at a speed of 3.25 m/s when the last car breaks free and begins to coast. How long does it take for the last car to come to rest.
In recent years, a number of nearby stars have been found to possess planets. Find the mass of the star
A child on a freely rotating merry-go-round moves from near the center to the edge. Will the rotational velocity of the merry-go-round increase, decrease, or not change at all? Explain.
Calculate the de Broglie wavelength ? of an electron with energy EF in sodium, and compare the value with the atomic separation R in sodium
A 6.0-kg block is at rest on a horizontal floor. If you push horizontally on the 6.0-kg block with a force of 24.0 N, it just starts to move. What is the coefficient of static friction
A 115 granite cube slides down a 35 frictionless ramp. At the bottom, just as it exits onto a horizontal table, it collides with a 235 steel cube at rest.
In a ballistic pendulum experiment a 20 g bullet is shot into a 2.3 kg block of wood suspended by a cord of negligible mass. what is the approximate muzzle speed (in m/s) for the gun that fired the bullet
If a mass of 1 kg is accelerated 1 m/s2 by a force of 1 N, illustrate what would be the acceleration of 10 kg acted on by a force of 20 N?
A boy in a moving bus at +6 m/s observes a car moving at -3 m/s. What is the actual velocity of the car
A train is traveling up a 5.0 degrees incline at a speed of 2.65 m/s when the last car breaks free and begins to coast without friction. How far did the last car travel before momentarily coming to rest
A Coast Guard cutter detects an unidentified ship at a distance of 23.0 km in the direction 15.0° east of north. Find the time required for the cutter to intercept the ship
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