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A. A water tower, vented to the atmosphere, is drained by a pipe that extends to the ground. The top surface of the water in the tank is 16.3 m above the ground. If the valve in the drain pipe is closed, what is the absolute pressure in the drain pipe at ground level?
B. If the valve is now open and the cross-sectional area of the drain pipe is 1.73×10-2 m2, find the volume flow rate in the drain pipe. Assume that the water speed at the top of the water in the tank is negligible.
Two infinitely large plates are arranged so that they are parrallel, and seperated by a distance d. What is the approximate electric field outside the plates
If an object of 50 grams of unknown material at 100 degrees C is mixed with 100 grams of water at 0 degrees C, the final temperature is 40 degrees C
A 3000 kg lunar lander is in orbit 50 km above the surface of the moon. how much work must the thrusters do
During 9.93 seconds a motorcyclist changes his velocity from v1,x = -37.3 m/s and v1,y = 14.1 m/s to v2,x =-21.9 m/s and v2,y = 29.3 m/s. Find the components of the motorcycle's average acceleration during this process, aav,x and aav,y.
Using a vernier caliper of least count 0.01 cm, the length of a cylinder is measured to be 3.76 cm, Calculate the probable percent error in the length
A field mouse trying to escape a hawk runs east for 6.0m , darts southeast for 3.8m , then drops 1.8m down a hole into its burrow
three point charges are arranged in a equilateral triangle of side a= m. Sketch the field lines due to + Q and -Q, What is the x-component of the force
A banked circular highway curve is designed for traffic moving at 60 km/h. What is the minimum coefficient of friction between tires and road that will allows
Two trains and a bird Two trains, each having a speed of 23km/h, are headed at each other on the equal straight track. A bird that can fly 60km/h flies off the front of one train when they are 70 km apart and heads directly for the other train.
Two runners start simultaneously from the same point on the circular 200 m track and run in opposite directions. One runs at a constant speed of 6.14 m/s and the other runs at a constant speed of 5.43m/s. When they first meet, for how long a time ..
Two skydivers are holding on to each other while falling straight down at a common terminal speed of 51.1 m/s. What is the change in kinetic energy of the system
If you place the box on a dolly of mass 5.3 {rm kg} and with coefficient of rolling friction 1.3×10−2, illustrate what horizontal acceleration would that 171 {rm N} force provide?
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