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Serjik [45]
3 years ago
8

A pump steadily delivers water through a hose terminated by a nozzle. The exit of the nozzle has a diameter of 2.5 cm and is loc

ated 4 m above the pump inlet pipe, which has a diameter of 5.0 cm. The pressure is equal to 1 bar at both the inlet and the exit, and the temperature is constant at 20°C. The magnitude of the power input required by the pump is 8.6 kW. Determine the mass flow rate delivered by the pump, in kg/s.

Physics
1 answer:
Gnom [1K]3 years ago
6 0

Answer:

15.98 kg/s

Explanation:

Due to some of the required symbols and for better understanding of the solution the explanation is all hand written and attached below

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The magnitude J of the current density in a certain wire with a circular cross section of radius R = 2.11 mm is given by J = (3.
oksano4ka [1.4K]

Answer:

i = 2.84 \times 10^{-3} A

Explanation:

As we know that current density is ratio of current and area of the crossection

now we have

J = \frac{di}{dA}

so the current through the wire is given as

i = \int J dA

now we have

i = \int_{0.921R}^R J dA

here we have

J = (3.25 \times 10^8)r^2

now plug in the values in above equation

i = \int_{0.921R}^R (3.25 \times 10^8)r^2 2\pi r dr

now we have

i = \int_{0.921R}^R 2\pi (3.25 \times 10^8)r^3 dr

i = (2.04 \times 10^9) \frac{r^4}{4}

now plug in both limits as mentioned

i = (2.04 \times 10^9)(\frac{R^4}{4} - \frac{(0.921R)^4}{4})

i = (2.04\times 10^9)(0.07 R^4)

here R = 2.11 mm

i = (2.04 \times 10^9)(0.07 (2.11 \times 10^{-3})^4)

i = 2.84 \times 10^{-3} A

8 0
3 years ago
_________statistics are measures that summarize the characteristics of a sample​
Tamiku [17]

Answer:

Explanation:

Descriptive statistics statistics are measures that summarize the characteristics of a sample.

Hope it helps

4 0
3 years ago
An astronaut's pack weighs 17.5 N when she is on earth, but only 3.24 N when she is on the surface of an asteroid. What is the a
Nimfa-mama [501]

Answer:

a= 1.81 m/s²

Explanation:

Ratio of the weights on both surfaces can be calculated as,

\frac{W_{a} }{W_{E} }=\frac{ma}{mg}

Here;

   Wa is the weight on the asteroid,       W_{E} is weight on earth,

         m is mass of pack,          a is acceleration due to an asteroid and

         g is acceleration due to gravity.

         Rearrange above equation for a,

           a=g (\frac{Wa}{W_{E} })

Substitute 3.24 N for Wa,       17.5 N for  W_{E},

          9.81 m/s² for g in the above equation,

          a= 9.81(\frac{3.24}{17.5})

          a= 1.81 m/s²

7 0
4 years ago
Two Mississippi companies, Howard Industries and Kuhlman Electric Company, are responsible for most of the transformers and powe
yanalaym [24]
I  think b but  im not sure just helping

5 0
3 years ago
Read 2 more answers
What is the value of acceleration due to gravity, g, on Earth?
qwelly [4]

Explanation:

It varies with altitude, but at sea level, it's 9.8 m/s².

8 0
4 years ago
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