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amm1812
3 years ago
9

Does magma consist only of rock forming materials ? explain

Biology
1 answer:
astra-53 [7]3 years ago
7 0
Yes because it is a mixture of solid and liquid matter and rock forming material can be found in the liquid/magma
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A sand storage tank used by the highway department for winter storms is leaking. As the sand leaks out, it forms a conical pile.
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Answer:

Rate of change of volume of the pile  = 54\pi

Explanation:

Given -

Rate of increase of the base of the pile = 0.75 inches per minute

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Then h = 2* r

Radius "r" = 6 inches

Rate of change of radius i.e

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\frac{\pi }{3} * r^2 * h\\= \frac{\pi }{3} * r^2 * 2 * r\\= \frac{\pi }{3} *2* r^3

Change in volume of conical pile

\frac{dV}{dt} =  \frac{dr}{dt}  * \frac{6* \pi * r^2 }{3}

Substituting the value of rate of change of radius, we get -

\frac{dV}{dt}  = 2 * \pi * (6^2) * (0.75)\\\frac{dV}{dt}  = 54 \pi

Rate of change of volume of the pile  = 54\pi

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