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A small plastic pipe carries water horizontally at a speed of 10 m s-1. A section of the pipe bulges out so that the radius is twice that of the rest of the pipe. If the gauge pressure in the pipe is ordinarily +90 kPa what is the gauge pressure in the bulge (in kPa) (the density of water is 1000 kg m-3)?
When a 0.2 kg mass is attached to a spring ( k = 196 N / m )on a horizontal frictionless surface and pulled 10.0 cm from equilibrium. The mass is released at time = 0 and undergoes SHM. In order to increase the frequency of the motion, one would have..
A grinding wheel is in the form of a uniform solid disk of radius 6.90 cm and mass 1.90 kg, how many revolutions does it turn while accelerating
A person scuffing her feet on a wool rug on a dry day accumulates a net charge of -42 µC. by how much does her mass increase
Determine the number of free electrons per cubic centimeter (and per atom) for sodium from resistance data (relaxation time 3.1 x 10~14 second)
You are playing raquetball at the rec center. When you are 10 m away from the wall you hit a ball 24 m/s towards the wall at an angle of 30 degrees. How high above the launch point does the ball hit the wall
Bats use the Doppler effect as a directional guide and to detect insects. Find the frequency of the sound detected by the bat
A chair of weight 75.0 lies atop a horizontal floor; the floor is not frictionless. Using Newton's laws, calculate , the magnitude of the normal force that the floor exerts on the chair
A photon having E = 25.7 keV energy scatters from a free electron inside a metal. What is the maximum energy the electron can gain from the photon, At which angle will the electron scatter
q. consider an infinite wire with radius r that carries a current ia compute b r for r lt rconsider a large parallel
Robert has just bought a new model rocket, and is trying to measure its flight characteristics. how much work is done by the drag force
During the takeoff of an airplane, a passenger removes his tie and lets it hang loosely from his fingers. What is the speed of the plane at takeoff
Four objects are situated along the y axis as follows: a 2.04 kg object is at +2.94 m, a 3.03 kg object is at +2.59 m, Where is the center of mass of these objects
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