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Water flows through a fire hose of diameter 7.09 cm at a rate of 1.2 x10-2 m3/s. The fire hose ends in a nozzle of inner diameter 2.69 cm. What is the velocity with which the water exits the hose?
A mass of gas occupies a volume of 4.3 L at a pressure of 1.8 atm and a temperature of 345 K. Determine the final pressure
A rotating wheel requires 2.99-s to rotate through 37.0 revolutions. What is the constant angular acceleration of the wheel
q1. earth takes about 365 days to orbit once around the sun. mercury the innermost planet takes less than a fourth of
The four tires on the author's car are inflated to an absolute pressure of 2.8 multiply.gif 105 Pa.what is the contact area between each tire and the ground
The drill used by most dentists today is powered by a small air-turbine that can operate at angular speeds of 320000 rpm. How many revolutions does the drill bit make
A 35-kg child rides a playground merry-go-round, standing 1.6 m from its center. What was the distance travelled by the child during this time
A charge of 3.0 uC(micro C) and a second charge are initially far apart. find the magnitude of the unknown charge
The safe slides with a constant speed if Clyde pushes from behind with 420 {rm N} of force while Bonnie pulls forward on a rope with 285 {rm N} of force. Illustrate what is the safe's coefficient of kinetic friction on the bank floor?
An instructor wants to use a lens to project the real image of a light bulb onto a screen 1.23 m from the bulb. In order to get the image to be two times as large as bulb, what focal length lens will be required.
The density of ice is 917 kg/m3, and the density of sea water is 1025 kg/m3. What is the weight of the heaviest bear that the ice can support without sinking completely beneath the water
A concrete slab is 9.7 cm thick and has an area of 4.6 m^2. What minimum power must be supplied to the coils to maintain a temperature difference of 17.3 Degrees C between the bottom of the slab and its surface
assume the roller coaster (h1 = 32 m, h2 = 11 m, h3 = 20) passes point A with a speed of 3.50 m/s. If the average force of friction is equal to one fifth of its weight, with what speed will it reach point B? The distance traveled is 30m.
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