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(See Fluids in the News article titled "Motorized Surfboard," Section 5.2.2.) The thrust to propel the powered surfboard shown in Fig. P5.79 is a result of water pumped through the board that exits as a high-speed 2.75-in.-diameter jet. Determine the flowrate and the velocity of the exiting jet if the thrust is to be 300 lb. Neglect the momentum of the water entering the pump.
The position of a ball rolling in a straight line is given by x=2.9 3.8t+5.2t2, where x is in meters and t in seconds. What is its instantaneous velocity at t= 2.0s and at t= 5.0s?
a chef upon awaking one morning to find his stove out of order decides to boil the water for his wifes coffee by
How many more revolutions would it take the disk to reach an angular speed - magnitude of the frictional force exerted by the track on the car tires to keep the car in a circle.
A wheel has a radius of 3.6m. How far (path length) does a point on the circumference travel if the wheel is rotated by angles of 30°, 30 rad, and 30 rev, respectively.
Four resistors 13 ohm, 17 ohm, 19 ohm, and 32 ohm are in parallel. Calculate the equivalent resistance
The Sahara desert with a very arid climate is one of the hottest regions in the world. Find by how many Celsius degrees does the temperature fall in the 24-hr period
As the drawing shows, the bullet puts a hole in a window of another building and hits the wall that faces the window. h is 0.54 m and d is 8.0 m. Assume that the bullet does not slow down as it passes through the window. Evaluate the Distance H
A total of 6.59E6 electrons are placed on an initially uncharged wire of length 2.51 m. What is the magnitude of the acceleration of a proton
If you were on a spaceship traveling a 0.5c away from a star, at what speed would the starlight pass you
A glass fiber of index 1.50 is used to transmit light but is submerged in water of index 1.33. What is the critical angle for light to stay inside the optical fiber
An organ pipe that is closed at one end has a fundamental frequency of 175 Hertz. Compute what the depth of the water in the pipe
Water moves into a pipe of cross sectional area 0.5m2 at a rate of10m/s. at a pressure of 10,000kPa. Determine the mass rate of flow of the water. The duct necks down to a cross-sectional area of 0.2m2. Determine the velocity in this cross-section.
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