3 years ago

Does anyone know the answer to: -6 = n/2 -10 n =

Mathematics

1 answer:

Ivanshal [37]3 years ago

7 0

So n=8 and those are all the steps

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The circular stream of water from a faucet is observed to taper from a diameter of 20 mm to 10 mm in a distance of 50 cm. Determ

steposvetlana [31]

Solution:

From Bernoulli equation

$\frac{1}{2}$ ρ $V_{1}^{2}$ + ρgh = $\frac{1}{2}$ ρ $V_{2}^{2}$ , where ρ is density of water, h – height difference and $V_{1}$ and $V_{2}$ are the velocities in upper and lower cross sections correspondingly. We take into account that the pressure in both cross-sections is the same and equal to the atmospheric one.

From the continuity and assuming water incompressible:

$\pi r_{1}^{2}$ $V_{1}$ = $\pi r_{2}^{2}$ $V_{2}$ , where $A_{1}$ and $A_{2}$ are the corresponding cross-sections. As the lower diameter is twice as low as the upper one, we can conclude that $V_{1} = \frac{V_{2}}{4}$

Inserting it back into Bernoulli equations produces:

$V_{1} = \sqrt{\frac{2}{15}gh} = 0.26m/s$ and the flow rate is

$\pi r_{1}^{2}V_{1} = \pi r_{2}^{2}V_{2} = 8.10^{-5} \frac{m^{3} }{s}$

6 0

3 years ago

Need help with this one.

ella [17]

Answer:

The answer should be 55

Step-by-step explanation:

All triangles must = 180

70+55+55 = 180

6 0

3 years ago

Read 2 more answers

1) Enter the value of n that makes the equation 4^6• 4^n= 4^9 true.

Maslowich

N=3 because when you’re multiplying two numbers with a power, you add them to get your answer. so it would be 4^6•4^3=4^9 because 6+3=9, making the only possible value of n, 3.

5 0

3 years ago

Is the answer 40? I am kind of confused

klemol [59]

Answer:

Yes

Step-by-step explanation:

29-18=11

c=11

18+2(11)=40

4 0

2 years ago

Read 2 more answers

Which of these expressions is equivalent to 3/6

zmey [24]

1/2, 6/12, 9,/18, and 15/30

7 0

2 years ago