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Water flows at a rate of 9.9 gal per minute in a new horizontal 0.75-in.-diameter riveted steel pipe.
Frictional pressure drop depends on velocity, diameter, viscosity, and roughness. Use the average value of a parameter for a range if no further information is given.
What is the relative roughness?
What is the Reynolds number?
What is the friction factor?
What is the pressure gradient (pressure drop in psi per foot of length)?
The total distance traveled by a point on the edge of a tire?
Four charged particles are placed at the corner of a square of side L. the charges are the following; Q(left top), -2Q(right top), -2Q(left bottom), Q (right bottom), Q>0. Calculate the forces acting on each charge
An earth satellite revolves in a circular orbit at a height of525 km above the earth's surface. What is the radial accerlation of the satellite
A U.S. penny has a diameter of 1.9000cm at 20.0 C. The coin is made of a metal alloy (mostly zinc) for which the coefficient of linear expansion is 2.6x10^-5 K^-1. What would its diameter be on a hot day in Death Valley
The flywheel of a steam engine runs with a constant angular velocity of 150 rev/min. When the steam is shut off, the friction of the bearings and of the air stops the wheel in 2.2 h.
Four equal masses m=0.5kg are placed on the corners of a square ofnegligible mass, whose sides are 0.4m long. What is the kinetic energy of the system
A room has a volume of 128 m3. An air-conditioning system is to replace the air in this room every twenty-three minutes, find the length of a side of the square
a shaving or makeup mirror is a large concave mirror. in terms of its focal length f what is the range of distances
Find the magnitude of the force on side 1, that runs from(0,0) to (0,L). Find the direction of the force on side 1, that runs from (0,0) to (0,L). Find the magnitude of the force on side 2, that runs from (0,L) to (L,L).
Light in vacuum is incident on the surface of a slab oftransparent material. What is the index of refraction of the transparent material
a hotel elevator ascends 200 m with a maximum speed of 5.2 ms. its acceleration and deceleration both have a magnitude
A television is tuned to a station broadcasting at a frequency of 7.00×10^7Hz . For best reception, the rabbit-ear antenna used by the TV should be adjusted to have a tip-to-tip length equal to half a wavelength of the broadcast signal.Find the op..
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