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A windmill is operating in a 10 m/s wind that has a density of 1.2 kg/m3. The diameter of the windmill is 4 m. The constant-pressure (atmospheric) stream tube has a diameter of 3 m upstream of the windmill and 4.5 m downstream. Assume that the velocity distributions are uniform and the air is incompressible. Determine the thrust force on the windmill.
Force in Two and Three Dimensions - Pressure and Fluids Pressure is a force exerted over an area and is measured in Pascals (Pa). P (in Pa) = Force (in newtons) / area (
Local electric field : It is the sum of the electric field from external sources and the field of the dipoles within the specimen. It is an idealized field calculated under particu
The atomic weight of an element is double its atomic number. If there are four electrons in 2P orbital, the element is : (1) C (2) N (3) O
Friction is a microscopic constant and so macroscopic level area does not matter. But area would matter if the object we''re putting under study was microscopic, which isn''t in o
Olbers' paradox (H. Olbers; 1826): If the Universe is uniform, infinite & unchanging then the whole sky at night would be bright regarding as bright as the Sun. The further yo
A plane e-m wave goes along vertical downward direction. At a provided instant, the direction of E at a point is towards east. Find the direction of B?
How to calibrate an oscilloscope?
A uniform ring has a radius R with centre C. A nd B are 2 pts on the circumference.such that angle theta is 60 0 .find the equivalent resistance between pt A and B? solution) le
scalar and vecror
1 Farad: One farad is described as the capacity of that capacitor which keeps a charge of 1 coulumb, if the potential difference among the plates is one volt. It's equation
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