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A pipe of diameter 6.5 cm carries water without turbulence. The velocity of the water is 15.3 cm/s. Downstream from this section, the pipe narrows to a diameter of 3.4 cm. What is the velocity of the water at this point?
(in cm/s)
A spring that has a force constant of 1000 N/m is mounted vertically on the ground. By what distance does the spring compress
At a winter fair a 65.5-kg stunt man is shot from a horizontal cannon that rests at the edge of a frozen lake. The human projectile is cast onto the smooth ice, slides some distance, how many revolutions does the stunt man make
A stuntman sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. The constant speed of the horse is 10.0 m/s, How long is he in the air
A boat has a mass of 6800 kg. Its engines generate a drive force of 4000 N, find the magnitude and direction of the boat's acceleration
A thick spherical shell of charge Q and uniform volume charge density ? is bounded by radii r1 and r2, where r2 > r1. With V = 0 at infinity, find the electric potential V as a function of the distance r from the center of the distribution, consideri..
A 5.8kg box is on a frictionless 40%u2218 slope and is connected via a massless string over a massless, What is the tension in the string once the box begins to move
A grinding wheel in the shape of a solid disk is 0.300 m in diameter and has a mass of 2.50 kg. How far would it have to drop in free fall to acquire the same amount of kinetic energy
A charge Q is uniformly distributed throughout a nonconducting sphere of Radius R. What is the magnitude of the electric field at a distance of R/2 from the center of the sphere? What is the magnitude of the electric field at a distance of 2R from th..
The coefficient of thermal expansion describes how the size of an object changes with a change in temperature. Specifically, it measures the fractional change in size per degree change in temperature at a constant pressure. Several types of coeffi..
A home-run baseball is hit with an initial speed vo=37.0 m/s at an initial angle qo=53.1o. Find the time when the ball reaches the highest point of its flight, and find its height at this point
The magnitude of vector vector A is 31.6 units and points in the direction 321° counterclockwise from the positive x-axis. find out the x-component of this vector.
An extension cord is used with an electric weed trimmer that has a resistance of 18.3 ?. Determine the resistance of the extension cord
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