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3 years ago

11

A water pipe tapers down from an initial radius of R1 = 0.2 m to a final radius of R2 = 0.09 m. The water flows at a velocity v1

= 0.87 m/s in the larger section of pipe. What is the volume flow rate of the water?

1 answer:

777dan777 [17]3 years ago

3 0

Answer:

0.109 m/s

Explanation:

The calculation of the volume flow rate of the water is shown below:-

Av = Velocity ( $\pi$ )(Radius)^2

= 0.87( $\pi$ )(0.2)^2

= 0.135258 m^3 / sec

= 0.109371429 m/s

or

= 0.109

So, for calculating the volume flow rate of the water we simply applied the above formula i.e by multiplying the velocity with pi and squaring of radius so that the volume could come

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ICE Princess25 [194]

5 newton forward because the force of the engine is greater than the force of friction so that means the car is going forward.
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3 years ago

Use Newton's method with the specified initial approximation x1 to find x3, the third approximation to the root of the given equ

sdas [7]

Answer:

$x_{3}=2.35$

Explanation:

Given $x^2-2x-1=0,x_1=2$

From Newton's method

$x_{n+1}=x_n-\dfrac{f(x_n)}{f'(x_n)}$

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Now

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$x_{2}=2+\dfrac{1}{2}$

$x_{2}=2.5$

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3 years ago

A lamp is connected to the power supply.

Vika [28.1K]

Answer:

There are 45 turns in the secondary coil.

Explanation:

Given that,

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Number of turns in primary coil, $N_P=150$

We need to find the number of turns needed on the secondary coil. We know that the ratio for a transformer is as follows :

$\dfrac{V_{out}}{V_{in}}=\dfrac{N_s}{N_P}\\\\N_s=\dfrac{V_{out}N_P}{V_{in}}\\\\N_s=\dfrac{1.5\times 150}{5}\\\\N_s=45\$

So, there are 45 turns in the secondary coil.

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Answer:

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3 years ago