The surface of water in a water tank of cross section area 750 cm^2 on the top of a house is h m. above the tap level. The speed of water coming out through the tap of cross section area 500 mm^2 is…

Question

The surface of water in a water tank of cross section area 750 cm^2 on the top of a house is h m. above the tap level. The speed of water coming out through the tap of cross section area 500 mm^2 is 30 cm/s. At that instant, d hd t is x x 10^-3 m/s. The value of x will be _____.

Accepted Answer

Correct answer: 2. (2) A_1V_1 ^= A_2 V_2 750 x 10^-4V_1 = 500 x l0^-6 x 0.3 V_1= 5 0 0×3×1 0^−37 5 0m/s = -2x10^-3m/s

$The surface of water in a water tank of cross section area 750 c m^{2} on the top of a house is h m. above the tap level. The speed of water coming out through the tap of cross section area 500 m m^{2} is 30 cm/s. At that instant, \frac{d h}{d t} is x x 1 0^{- 3} m/s. The value of x will be _____.$

Solution

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