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Water is supplied to an office building 41.5 m high through a pipe at ground level.
a) Find the minimum pressure in the supplypipe so that water can reach the top floor of the building.b) Suppose the pressure in the supply pipe is designed so that water can flow out through a much smaller pipe on the top floor ata speed of 4.85 m/s. Find the pressure inthe larger pipe on the ground floor.
A mass m1 = 3.2 kg rests on a frictionless table and connected by a massless string over a massless pulley to another mass m2 = 4.3 kg which hangs freely from the string, How much work is done by gravity on the two block system
he triceps muscle in the back of the upper arm extends the forearm. What is the moment of inertia of the boxer's forearm
Two identical conducting spheres, fixed in place, attract each other with an electrostatic force of -0.6020 N when separated by 50 cm, center-to-center.
A skier starts from rest at the top of a frictionless incline of height 20.0 m, Find the skier's speed at the bottom
A cannon is fired horizontally from atop a40.0 m tower. The cannonball travels 160 mhorizontally before it strikes the ground. With what velocity did the ball leave the muzzle
The lowest frequency standing wave pattern that can be made on a certain string on a cello is 220Hz (which is a musical "A" note). calculate the frequency of the 3rd overtone
A magnetic field is perpendicular to the plane of a single-turncircular coil. The magnitude of the field is changing, so that anemf of 0.82 V and a current of3.0 A are induced in the coil.
M1 is five times more massive than M2. One force acts on the hanging mass, but the net force acts on both masses. Once you have the acceleration, you can compute the distance.
after flying for 15 min in a wind blowing 42 kmh at an angle of 34deg south of east an airplane pilot is over a town
A box of unknown mass begins at the base of a 30 degree ramp with an initial velocity of 10.0 m/s. calculate the maximum distance up the ramp which the box will reach
A man stands on a frictionless platform that is rotating with an angular speed of 2.3 rad/s; his arms are outstretched and he holds a weight in each hand. what is the resulting angular speed of the platform
An audio amplifier delivers to the speaker alternating voltage at audio frequencies. what is the time-averaged power transferred to it
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