4 years ago

Please hurry and answer this question

Mathematics

1 answer:

Butoxors [25]4 years ago

6 0

I don’t see any question.

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A fluid has density 860 kg/m3 and flows with velocity v = z i + y2 j + x2 k, where x, y, and z are measured in meters and the co

ehidna [41]

You can use the divergence theorem:

$\vec v=z\,\vec\imath+y^2\,\vec\jmath+x^2\,\vec k$

has divergence

$\mathrm{div}\vec v=\dfrac{\partial z}{\partial x}+\dfrac{\partial y^2}{\partial y}+\dfrac{\partial x^2}{\partial z}=2y$

Then the rate of flow out of the cylinder (call it <em>R</em>) is

$\displaystyle\iint_{\partial R}\vec v\cdot\mathrm d\vec S=\iiint_R\mathrm{div}\vec v\,\mathrm dV$

(by divergence theorem)

$=\displaystyle2\int_0^{2\pi}\int_0^5\int_0^1r^2\sin\theta\,\mathrm dz\,\mathrm dr\,\mathrm d\theta$

(after converting to cylindrical coordinates)

whose value is 0.

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3 years ago

8 less than the quotient of 18and a number m

antoniya [11.8K]

Answer:

8-18/m

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4 years ago

14. The cost of 10 dozen of caps is Rs.800. How many caps can bebought for Rs.200.

kvasek [131]

Answer:

123 456lcm divison method

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3 years ago

10V

frosja888 [35]

Answer:

either 2 or 1/2, depending on what the original shape was

Step-by-step explanation:

going from small to large it is clearly visible that 3 units of side length turn into 6 units. so, the scaling factor is 2.

going from large to small it is clear that 6 units of side length turn into 3 units. so, the scaling factor is 1/2.

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3 years ago

Help please Brainly involved

scoundrel [369]

Answer:

17 is M

Step-by-step explanation:

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3 years ago