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Water at a pressure of 4 atm at street level flows into an office building at a speed of 0.7 m/s through a pipe 5 cm in diameter. The pipes taper down to 2.2 cm in diameter by the top floor, 20 m above. Calculate the water pressure in such a pipe on the top floor.(g = 9.8 m/s2)
A bullet is fired through a board, 18.0 cm thick, with its line of motion perpendicular to the face of the board. find the bullet's acceleration as it passes through the board
A flywheel comprises a uniform circular disk with a moment of inertia of 5.70×101 Kg m2. What energy (in Joules) must this force dissipate to stop the wheel
In coming to a stop, car leaves skid marks 78 long on the highway. Assuming a deceleration of 7.1 estimate the speed of the car just before braking.
a little girl and her father are both playing on a merry go round in the park. what is the average angular velocity of the father
One side of the roof of a building slopes up at 37.0°. A roofer kicks a round, flat rock that has been thrown onto the roof by a neighborhood child.
A certain fuel-efficient hybrid car gets gasoline mileage of 55.0 mpg (miles per gallon). If you are driving this car in Europe and want to compare its mileage with that of other European cars, express this mileage in km/l (liter).
in its daily prow of the neighborhood a cat makes a displacement of 100m due north followed by an 80m displacement east. what is the magnitude and direction of the velocity
A 14.2-g piece of Styrofoam carries a net charge of -0.69 µC and is suspended in equilibrium above the center of a large, horizontal sheet of plastic that has a uniform charge density on its surface. What is the charge per unit area on the plastic..
A rock is thrown downward from the top of a 39.8-m-tall tower with an initial speed of 9 m/s. Assuming negligible air resistance, what is the speed of the rock
A very long, straight solenoid with a cross-sectional area of 6.00cm2 is wound with 40.0 turns of wire per centimeter, What is the average induced emf in the secondary coil
A simple pendulum has a length of 52.4 cm and makes 83.7 complete oscillations in 2.00 min. Find the period of the pendulum
Displacement d1 is in the yz plane 58.4° from the positive direction of the y axis, has a positive z component of 5.99 m, find the angle between d1 and d2
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