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Question:
Water at a gauge pressure of 3.8 atm at street level flows in to an office building at a speed of 0.06 m/s through a pipe 5.0 cm in diameter. The pipes taper down to 2.6cm in diameter by the top floor, 20 m above. Calculate the flow velocity and the gauge pressure in such a pipe on the top floor. Assume no branch pipe and ignore viscosity.
A physics student wants to cool a glass of Diet Cola (mostly water), initially at 27°C, by adding ice initially at -18°C. If there is 250g of Diet Cola in the glass, how much ice must they add so that the final temperature will be 0°C?
A sphere of radius r starts from rest and rolls without slipping along a curved surface, dropping through a vertical distance of 0.303 m. Find the final speed v of the sphere's center of mass
A mass (m=5kg) is attached to a horizontal spring and placed on a frictionless surface. The spring-mass system is compressed, and released. What is the total energy of the spring-mass system
A pendulum clock has an aluminum pendulum exactly 1.0m long when the clock is calibrated perfectly. The temperature increases by 9?C. By how much is it off at the end of one day
what is the derivative of position as a function of time? what is the derivative of velocity as a function of time
What mass of water at 25.0° C added to a Styrofoam cup containing two 60.0-g ice cubes from a freezer at -17.0° C will result in a final temperature of 5.0°C for the drink?
Is this advertisement technically reasonable? If you are like most TV viewers, you don't know the R-value is defined as L/k, where L (in.) is the thickness of the insulation and k (Btu · in/hr · ft2 · oF) is the thermal conductivity of the materia..
An artificial satellite circles the Earth in a circular orbit at a location where the acceleration due to gravity is 4.77 m/s2. Find the orbital period of the satellite
A car with a mass of 800 kg moves up a hill inclined at an angle 15? to the horizontal with a constant acceleration of 2.5 ms?2. Find the force of the engine
when a parachute opens the air exerts a large drag force on it. this upward force is initially greater than the weight
A 60 cm long rod has a 4.00 kg mass on one end and a 6.00 kg mass on the other end. How far from the center of the rod is its center of mass
As you stand near a railroad track, a train passes by at a speed of 30.9 m/s while sounding its horn at a frequency of 215 Hz. What frequency do you hear as the train approaches you
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