Efficiency of a simple machine is the ratio of mechanical advantage and speed ratio.
If mechanical advantage = speed ratio then efficiency = 1
Which is impossible for a practical machine due to presence of frictional force which wastes some energy and thus lowers the output
Answer:
Espero que esto ayude
Explanation:
se dirige a los terneros, isquiotibiales, flexores de cadera, muslos externos y quads.
Answer:
Explanation:
In Ptolemy's geocentric model of the universe, the Sun, the Moon, and each planet orbit a stationary Earth. He had them in circle orbits.
Galileo's model showed that the sun was the centre of the universe. That everything orbited around the earth. He also saw that they we in elliptical orbits.
Galileo proved Ptolemy wrong because Ptolemy said that everything orbited the earth and they orbited in circle but they orbit in ovals (elliptical) and that they orbit the sun.
Answer:
![f = 214.375\ Hz](https://tex.z-dn.net/?f=f%20%3D%20214.375%5C%20Hz)
Explanation:
Given,
Length of the Pipe, L = 80 cm
Frequency ,f = ?
Speed of sound, v = 343 m/s
Wavelength when pipe is open at both the ends
![\lambda = 2 L](https://tex.z-dn.net/?f=%5Clambda%20%3D%202%20L)
![\lambda = 2\times 80 = 160\ cm = 1.6\ m](https://tex.z-dn.net/?f=%5Clambda%20%3D%202%5Ctimes%2080%20%3D%20160%5C%20cm%20%3D%201.6%5C%20m)
Fundamental frequency
![f =\dfrac{v}{\lambda}](https://tex.z-dn.net/?f=f%20%3D%5Cdfrac%7Bv%7D%7B%5Clambda%7D)
![f = 214.375\ Hz](https://tex.z-dn.net/?f=f%20%3D%20214.375%5C%20Hz)