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Gasoline flows through a horizontal pipeline with a flow rate of 25 ft 3 / min. A pressure gauge measures the pressure to be 315 lb/ft2 in a part of a pipeline with a diameter of 4.2. If the line expands to a pipe with a diameter of 6.5, calculate:
a) The flow speed in the larger pipe (ft/s)?
b) The pressure in this pipe (lbs/ft2)?
Two rockets are each 1000m long in their rest frame. Rocket 1,traveling at .9*c relative to earth, in over taking rocket 2.Rocket 2 is only moving at .5*c. According to the crew on rocket 2,how long does it take for rocket 2 to completely pass?
a skier slides horizontally along the snow for a distance of 12 m before coming to rest. the coefficient of kinetic
suppose that a projectile which is subject to a linear resistive force is thrown down with a speed of Vyo which is greater than the terminal speed Vterm. Describe and explain how the velocity varies with time, and make a plot of Vy against t for t..
an iron ball suspended by thread of negligible mass from an upright cylinder that floats partially submerged in water. What is the radius r of the iron ball
A 45dB sound wave strikes an eardrum whose area is4.2multiplied by10-5m2. How much energy is absorbed by the eardrum per second
10 kg of water at 20 degrees C converted to ice at -10 degrees C by being put in contact with a reservoir at -10 degrees C. This process takes place at constant pressure and the heat capacities at constant pressure of water and ice are 4180 and 2090 ..
A small steel wire of diameter 1.0mm is connected to an oscillator and is under a tension of 5.7N. What is the power output of the oscillator, assuming that the wave is not reflected back
You are traveling in a car toward a hill at a speed of 36.4 mph. The car's horn emits sound waves of frequency 231 Hz, Determine the frequency with which the waves strike the hill
4.30 g lead bullet traveling at 320 m/s is stopped by a large tree. what is the increase in temperature of the bullet
A hollow cylinder (hoop) is rolling on ahorizontal surface at speed v = 4.8 m/s when it reaches a12° incline. How long will it be on the incline before it arrives back atthe bottom
King Arthur's knights use a catapult to launch a rock from their vantage point on top of the castle wall, How far from the castle wall does the launched rock hit the ground
A nitrogen molecule is initially in a large volume of calm air at STP. How many collisions does the nitrogen molecule suffer in 10 minutes
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