The flow will be laminar if Reynold's number
is less than 2000.
Use the Reynold's formula and rearrange to calculate velocity of water in the pipe.
Where, 
is velocity of the fluid, 
is the diameter of pipe, and 
is the kinematic viscosity i.e. 
for water at 288.7 K from Appendix.
So, velocity is:
The flow rate <em>Q</em>:
![Q = vA=v\pi D^2/4=\frac{\frac{N_R \nu}{D} \pi D^2}{4} =[tex] t = \frac{V}{\frac{N_R \nu \pi D}{4}} = \frac{4V}{N_R \nu \pi D} =\frac{4 \times 190 L\frac{10^{-3} m^3}{L}}{2000 \times 1.12\times 10^{-6} m^2/s \pi 15.24 cm\frac{1 m}{100 cm}} = 2226.3 s \frac{1 min}{60 s}= 37.1 min](https://tex.z-dn.net/?f=%20Q%20%3D%20vA%3Dv%5Cpi%20D%5E2%2F4%3D%5Cfrac%7B%5Cfrac%7BN_R%20%5Cnu%7D%7BD%7D%20%5Cpi%20D%5E2%7D%7B4%7D%20%3D%5Btex%5D%20t%20%3D%20%5Cfrac%7BV%7D%7B%5Cfrac%7BN_R%20%5Cnu%20%5Cpi%20D%7D%7B4%7D%7D%20%3D%20%5Cfrac%7B4V%7D%7BN_R%20%5Cnu%20%5Cpi%20D%7D%20%3D%5Cfrac%7B4%20%5Ctimes%20190%20L%5Cfrac%7B10%5E%7B-3%7D%20m%5E3%7D%7BL%7D%7D%7B2000%20%5Ctimes%201.12%5Ctimes%2010%5E%7B-6%7D%20m%5E2%2Fs%20%5Cpi%2015.24%20cm%5Cfrac%7B1%20m%7D%7B100%20cm%7D%7D%20%20%3D%202226.3%20s%20%5Cfrac%7B1%20min%7D%7B60%20s%7D%3D%2037.1%20min%20)
[/tex]
Where A is the area of cross section of pipe.
The time taken to fill is:
Where V is the capacity of the tank.
When block is pushed upwards along the inclined plane
the net force applied on the block will be given as
here we know that
m = 75 kg
now plug in all values into this
now for finding the power is given as
The average distance from the Sun to Neptune is about 2.795 billion miles.
That's roughly 0.00048 of a light year .
A low-luminosity star has a small and narrow <u>habitable zone</u>, whereas a high-luminosity star has a large and wide one.
<h3>What is luminosity of a star?</h3>
The radiant power emitted by a light-emitting item over time is measured as luminosity, which is an absolute measure of radiated electromagnetic power (light).
The total quantity of electromagnetic energy released per unit of time by a star, galaxy, or other celestial object is referred to as luminosity in astronomy.
Learn more about low-luminosity star:
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