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A farmer needs to provide a volume of 500L every minute of 20-c water from a lake through a wrought iron pipe a distance of 800m to a field 4m below surface of the lake. Use moody diagram and determine the diameter of pipe that should be selected.
What is the efficiency of an out-of-condition professor who does 1.90 x 105 J of useful work while metabolizing 500 kcal of food energy?
A cockroach crawls with a constant speed on a phonograph turntable that is rotating with angular velocity ?. If the bug moves at constant speed away from the center of the turntable draw all forces acting on the bug (in the bug's frame).(b) Now sa..
A skateboarder shoots off a ramp with a velocity of 5.7 m/s, directed at an angle of 53° above the horizontal. how far is this point horizontally from the end of the ramp
An aluminium wire, of length l1 = 60.0 cm, cross-sectional area 1.00 x 10^-2 cm^2, and density 2.60 g/cm^3, is joined to a steel wire, of density 7.80 g/cm^3 and the same cross-sectional area. The compound wire, loaded with a block of mass in = 10.0 ..
A rocket-powered hockey puck has a thrust of 1.60N and a total mass of 2.10kg. How far does the puck land from the base of the table
The asteroid 243 Ida has a mass of about 4.0×1016 kg and an average radius of about 16 km, How long would it take for your rock to return and hit you in the back of the head
Up where the ISS (International Space Station) orbits at 387 km, even though they are weightless there still is an acceleration due to gravity. Calculate its value and what it is in respect to 8g at the Earth's surface.
The CG of a 150kg polar bear standing on all fours is 80 cm from her for paws and 100cm from her hind paws. Discover the force the ground exerts on each of her paws.
A diving board of length 3.00 is supported at a point 1.00 from the end, and a diver weighing 530 stands at the free end (Figure 1) . The diving board is of uniform cross section and weighs 300. Find the magnitude of the force at the support point.
The initial velocity of a 2.28 kg block sliding down a frictionless inclined plane is found to be 1.11 m/s, What is the angle of the plane with respect to the horizontal
a long pair of wires conducts 23.7 a of dc current to and from an instrument. if the insulated wires are of negligible
a linear accelerator is operated at 700 kv to accelerate protons. what energy will the protons have when they exit the
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