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A pressurized cylindrical tank, 5.0 {\rm m} in diameter, contains water which emerges from the pipe at point C, with a velocity of 12 {\rm m/s}. Point A is 10 {\rm m} above point B and point C is 3 {\rm m} above point B. The area of the pipe at point B is 9×10?2 {\rm m}^{{2}} and the pipe narrows to an area of 2×10?2 {\rm m}^{{2}} at point C. Assume the water is an ideal fluid in laminar flow. The density of water is 1000 {\rm kg/m}^{{3}}. In the figure, the rate at which the water level is falling in the tank, in \rm mm/s, is closest to:
The Hall effect can be used to determine the density of mobile electrons in a conductor. Find the density of mobile electrons in the material
Three astronauts, propelled by jet backpacks, push and guide a 115 kg asteroid toward the processing dock, exerting the forces, with F1 = 34 N, F2 = 57 N, F3 = 41 N, θ1 = 30°, and θ3 = 60°
A very long, straight solenoid with a cross-sectional area of 6.15cm squared is wound with 50 turns of wire per centimeter, calculate the average induced emf in the secondary coil
For a diverging lens (f = -22.0 cm), find the image distance for an object that is 22.0 cm from the lens. Determine the magnification of the lens
The distance between two successive minima of a transverse wave is 2.45 m. Five crests of the wave pass a given point along the direction of travel every 14.5 s. (a) Find the frequency of the wave. Hz (b) Find the wave speed. m/s
Ball 1, with a mass of 110g and traveling at 15m/s, collides head on with ball 2, which has a mass of 300g and is initially at rest, What are the final velocities of each ball if the collision is perfectly elastic
By how much does the ball clear the net. How far below top surface would the medallion appear if the observer (not wearing goggles) and the block were under water.
A cylinder contains 1.85 mol of helium gas at 18.5°C. Assume that the helium behaves like an ideal gas. What is the average kinetic energy per molecule
1.give the definition of electrical circuit. draw the simplest electrical circuit and mark the directions of electrical
A carnot engine operates between asource temerature of 700 degrees celsius and a sink temperatiure of 20 degrees celsius. determine the efficiency of the engine
A car initially traveling eastward turns north by traveling in a circular path at uniform speed, Determine the car's average speed
A uniform beam of length L = 8.00 m and weight 5.35x10^2 N is carried by two workers, Determine the force that each person exerts on the beam
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