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1. Water flows in a rectangular, finished concrete channel at a rate of 2 m3/s. The bottom slope is 0.001. Determine the channel width if the water depth is to be equal to its width.
2. An old, rough-surfaced, 2-m-diameter concrete pipe with a Manning coefficient of 0.025 carries water at a rate of 5.0 m3/s when it is half full. It is to be replaced by a new pipe with a Manning coefficient of 0.012 that is also to flow half full at the same flowrate. Determine the diameter of the new pipe.
A certain source of sound wavesradiates uniformly in all directions. What is the total acoustic powerout put of the source in watts
What is the angular momentum of a 0.210 kg ball rotating on the endof a thin string in a circle of radius 1.10 m at an angular speedof 10.4 rad/sec^2
charges of 8.5x10-7 c each are located at three of the corners of a square that is 1m on each side. a charge of
A plank of length L=1.800 m and mass M=4.00 kg is suspended horizontally by a thin cable at one end and to a pivot on a wall at the other end as shown. The cable is attached at a height H=1.70 m above the pivot and the plank's CM is located a dis..
If you run the wire between the poles of a strong horseshoe magnet, subjecting 5.00 cm of it to a 1.95 T field (perpendicular to the wire), what force is exerted on this segment of wire
gold which has a density of 19.32 gcm3 is the most ductile metal and can be pressed into a thin leaf or drawn out into
if sunlight shines straight onto a peacock feather the feather appears bright blue when viewed from 16 on either side
Disscus how the conservation of energy law explain whys the temperature of a gas increases when it is quickly compressed, whereas the temperature decreases when the gas expands.
Neglect air resitance. Find rocket's kinetic energy when the rocket is 1000 km above Earth's surface. Illustrate what is the max heigh that the rocket reaches.
The fundamental frequency of a standing wave on a 1.3-m-long string is 410Hz. What would be the wave speed of a pulse moving along this string
A glass window is exactly 16 cm by 27 cm at 8°C. By how much has its area increased when its temperature is 38°C, assuming that it can expand freely
A 50.0 kilogram child stands at the rim of a merry-go-round of radius 2.15 meter, rotating with an angular speed of 2.70 rad/s. Find the child centripetal acceleration
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