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A venturi meter is used to measure the flow speed of a fluid in a pipe. The meter is connected between two sections of the pipe (the figure); the cross-sectional area A of the entrance and exit of the meter matches the pipe's cross-sectional area. Between the entrance and exit, the fluid flows from the pipe with speed V and then through a narrow ''throat'' of cross-sectional area a with speed v. A manometer connects the wider portion of the meter to the narrower portion. The change in the fluid's speed is accompanied by a change ?p in the fluid's pressure, which causes a height difference h of the liquid in the two arms of the manometer. (Here ?p means pressure in the throat minus pressure in the pipe.) Suppose that the fluid is fresh water, that the cross-sectional areas are 57 cm2 in the pipe and 40 cm2 in the throat, and that the pressure is 55 kPa in the pipe and 44 kPa in the throat. What is the rate of water flow in cubic meters per second?
A ski starts from rest and slides down a 28 degree incline 70m long. If the coefficient of friction is 0.090, what is the ski's speed at the base of the incline
As part of a circuit act, a person drives a motorcycle with constant speed v around the inside of a vertical track of radius r. If the combined mass of the motorcycle and rider is m, find the normal force exerted on the motorcycle by the track at ..
You're a marine biologist concerned with the effects of sonic booms on plankton, and you need to estimate the altitude of a supersonic aircraft flying directly over you at 1.1 times the speed of sound
A 750g aluminum pan is removed from the stove and plunged into a sink filled with 10.0kg of water at 20.0C. What was the initial temperature of the pan
A string that is fixed at both ends has a length of 1.61 m. When the string vibrates at a frequency of 92.8 Hz, What is the fundamental frequency of the string
q1. a 2.2 kg ball is shot straight upward into the air with an initial speed of 7.8 ms. the ball is fired from the
q1. consider a too-small space station that consists of a 3.1 m radius rotating sphere. a man standing inside is 2.0 m
A 5g lead bullet travelling at 370-m/s is stopped by a large tree. If half the kinetic energy of the bullet is transformed into internal energy and remains with the bullet whilst the other half is transmitted to the tree, what is the increase in t..
What is the potential diffrence between two infinte parallel plates seperated by a distance d with uniform surface charge densities +s and -s, what is the voltage at positive infinity
The output voltage of an AC source is given by ?v = 120 sin 26.0pt, where ?v is in volts and t is in seconds. Find the frequency of the source
within the discussion board area write 400-600 words that respond to the following questions with your thoughts ideas
an object 10.0-kg slides upward on a slippery vertical wall a force of 60n at an angle of 60 degrees. determine the normal force exerted on the object by the wall
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