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The cylindrical tube of spray pump has a cross- section of 8 cm^(2) one end of which has 40fine holes each of area 10^(-8) m^(2) . IF the liquid flows inside the tube with a speed of 0.15 m min ^(-1) . The speedwith which the liquyid is ejected through the holes is |
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Answer» `50 ms^(-1)` ` (40 xx 10^(-8)) xx v_(1) = 8 xx 10^(-4) xx (0.15/60)` ` or v_(1) = ( 8 xx 10^(-4) xx 0.15)/(40 xx 10^(-8) xx 60) = 5 m s^(-1)` |
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