Answer:
If a body is moving with uniform velocity, acceleration is zero. So net force acting on it will be also zero. But the body has energy due to its constant motion.
Answer:
(a) Velocity will be 17.146 m/sec
(b) Volume flow rate will be ![66.871\times 10^{-3}m^3/sec](https://tex.z-dn.net/?f=66.871%5Ctimes%2010%5E%7B-3%7Dm%5E3%2Fsec)
Explanation:
We have given height of the dam h = 15 m
Acceleration due to gravity ![g=9.8m/sec^2](https://tex.z-dn.net/?f=g%3D9.8m%2Fsec%5E2)
Effective area ![A=3.90\times 10^{-3}m^2](https://tex.z-dn.net/?f=A%3D3.90%5Ctimes%2010%5E%7B-3%7Dm%5E2)
(a) From conservation of energy
Potential energy at the top will be equal to kinetic energy at the bottom
So ![mgh=\frac{1}{2}mv^2](https://tex.z-dn.net/?f=mgh%3D%5Cfrac%7B1%7D%7B2%7Dmv%5E2)
![v=\sqrt{2gh}=\sqrt{2\times 9.8\times 15}=17.146m/sec](https://tex.z-dn.net/?f=v%3D%5Csqrt%7B2gh%7D%3D%5Csqrt%7B2%5Ctimes%209.8%5Ctimes%2015%7D%3D17.146m%2Fsec)
(b) We have to find the volume flow rate
Volume flow rate is given by
![V=area\times velocity = 3.9\times 10^{-3}\times 17.146=66.871\times 10^{-3}m^3/sec](https://tex.z-dn.net/?f=V%3Darea%5Ctimes%20velocity%20%3D%203.9%5Ctimes%2010%5E%7B-3%7D%5Ctimes%2017.146%3D66.871%5Ctimes%2010%5E%7B-3%7Dm%5E3%2Fsec)
Given what we know, we can confirm that due to its relatively low image quality, any memory card with at least one MB will be sufficient to hold the 120 images taken.
<h3>Why is one MB enough?</h3>
The photos are taken at 8 megapixels, with each one occupying 14 bits of information. A megabit consists of one million bits of potential storage. Therefore, the 120 pictures will occupy roughly 1% of the available storage of a 1 MB memory card.
Therefore, we can confirm that due to its relatively low image quality, any memory card with at least one MB will be sufficient to hold the 120 images taken.
To learn more about megabits visit:
brainly.com/question/22735284?referrer=searchResults
<span>If a plane has a velocity of 300 km/h and a tailwind of 20 km/h, then the vectors of both forces would add (assuming that the tailwind is blowing exactly at the airplanes back) to a total of 320 km/h. Hope it helps
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Asteroids revolve around the sun in groups. There is a belt of them between Mars and Jupiter.