Answer:
The speed of the water wave is ![v = 88 \ m/s](https://tex.z-dn.net/?f=v%20%20%3D%2088%20%5C%20m%2Fs)
Explanation:
From the question we are told that
The width of the tube is ![L = 55 \ m](https://tex.z-dn.net/?f=L%20%20%3D%20%2055%20%5C%20m)
The fundamental frequency is ![f = 0.80 \ Hz](https://tex.z-dn.net/?f=f%20%3D%20%200.80%20%5C%20Hz)
Generally the fundamental frequency is mathematically represented as
![f = \frac{v}{2 * L }](https://tex.z-dn.net/?f=f%20%3D%20%20%5Cfrac%7Bv%7D%7B2%20%2A%20%20L%20%20%7D)
=> ![v = f * 2 * L](https://tex.z-dn.net/?f=v%20%20%3D%20%20f%20%2A%20%202%20%2A%20%20L)
substituting values
![v = 0.8 * 2 * 55](https://tex.z-dn.net/?f=v%20%20%3D%20%200.8%20%2A%20%202%20%2A%2055)
![v = 88 \ m/s](https://tex.z-dn.net/?f=v%20%20%3D%2088%20%5C%20m%2Fs)
Explanation:
We have,
Speed of plane a is 900 km/h
Plane b is moving at a rate of ![\dfrac{250\ km}{5\ h}=50\ km/h](https://tex.z-dn.net/?f=%5Cdfrac%7B250%5C%20km%7D%7B5%5C%20h%7D%3D50%5C%20km%2Fh)
It is required to find which plane is faster. To find which plane is faster, we need to compare their speeds.
Speed of a plane a is 900 km/h and that of plane b is 50 km/h. So, we can say that plane a is moving faster.
Well formation of metallic bond depends on free electrons.smaal sized atoms hold their electrons more firmly as compared to large size atoms ,this z due to distance of outer shell electrons by nucleus..in this way no of free electrons affect strength of metallic bond..smaal sized atoms release less free electrons..