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The drag on a 30-ft long, vertical, 1.25-ft diameter pole subjected to a 30 mph air wind is to be determined with a model study. It is expected that the drag is a function of the pole length and diameter, the fluid density and viscosity. Laboratory model tests were performed in a high-speed water tunnel using a model pole having a length of 2 ft and a diameter of 1 in. Some model drag data are shown in the figure. Based on these data, predict the drag on the full-sized pole.
It is the demagnetising force which is necessary to neutralize completely the magnetism in the magnetism material after the external magnetic field is reduced to zero.
Factors which are affect velocity of sound in gaseous medium is (1) Effect of density (2) Effect of pressure (3) Effect of temperature : (4) Effect of humidity
Q. A screen is placed 90 cm from an object. The image of the object on the screen is formed by a convex lens at two different locations separated by 20cm. Determine the focal lengt
(i) These are positive ions having similar mass if the experimental gas does not have isotopes. However if the gas has substances then positive pulses are group of positive ions ha
Q. What are antireflection films and interference filters? Ans. Anti reflecting Films: When a beam of light travels normally from a medium of refractive index µ2 to a me
Faraday's second law of electrolysis: The charge Q needed to deposit or liberate a mass m is proportional to the charge z of the mass, the ion and inversely proportional to th
Copper Atomic number 29 Symbol Cu Atomic weight 63.546 Discovery Cu has
At 200.0 K, germanium has 1.16 x 10 10 thermally liberated charge carriers/cm 3 . If it is doped with 1 As atom to 525,000 Ge atoms, what is the ratio of doped carriers to the
Steel: Steel contains iron with a small percentage of carbon added it. Iron itself is not very strong but the additions of small percentage of carbon in it decrease the ductility
Two cars head out in the similar direction. Car A starts 1.0 min before car B. The position-time graphs for both cars are shown in the accompanying figure. a. How far apa
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