<u>Answer:</u> The speed of the electron is ![7.24\times 10^3m/s](https://tex.z-dn.net/?f=7.24%5Ctimes%2010%5E3m%2Fs)
<u>Explanation:</u>
To calculate the speed of electron for given wavelength, we use the equation given by De-Broglie's, which is:
![\lambda=\frac{h}{mv}](https://tex.z-dn.net/?f=%5Clambda%3D%5Cfrac%7Bh%7D%7Bmv%7D)
where,
= De-Broglie's wavelength = ![100nm=100\times 10^{-9}m](https://tex.z-dn.net/?f=100nm%3D100%5Ctimes%2010%5E%7B-9%7Dm)
h = Planck's constant = ![6.6\times 10^{-34}Js](https://tex.z-dn.net/?f=6.6%5Ctimes%2010%5E%7B-34%7DJs)
m = mass of the electron = ![9.11\times 10^{-31}kg](https://tex.z-dn.net/?f=9.11%5Ctimes%2010%5E%7B-31%7Dkg)
v = speed of the electron = ?
Putting values in above equation, we get:
![100\times 10^{-9}m=\frac{6.6\times 10^{-34}Js}{9.11\times 10^{-31}kg\times v}\\\\v=\frac{6.6\times 10^{-34}Js}{9.11\times 10^{-31}kg\times 100\times 10^{-9}m}=7.24\times 10^3m/s](https://tex.z-dn.net/?f=100%5Ctimes%2010%5E%7B-9%7Dm%3D%5Cfrac%7B6.6%5Ctimes%2010%5E%7B-34%7DJs%7D%7B9.11%5Ctimes%2010%5E%7B-31%7Dkg%5Ctimes%20v%7D%5C%5C%5C%5Cv%3D%5Cfrac%7B6.6%5Ctimes%2010%5E%7B-34%7DJs%7D%7B9.11%5Ctimes%2010%5E%7B-31%7Dkg%5Ctimes%20100%5Ctimes%2010%5E%7B-9%7Dm%7D%3D7.24%5Ctimes%2010%5E3m%2Fs)
Hence, the speed of the electron is ![7.24\times 10^3m/s](https://tex.z-dn.net/?f=7.24%5Ctimes%2010%5E3m%2Fs)
I think that bubbles are very sensitive when it hits the water and that the bubbles can change the flow of the water. I think that bubbles have little affect on land animals but it will possibly change the temp in the air.
Which has the highest electronegativity value?
A
hydrogen
B
calcium
C
helium
D
fluorine d because fluorine has a higher group number
Answer: E
Hope this helped :)
Answer:
D. -80m/s^2
Explanation:
V = u + at
5 = 65 + a (0.75)
0.75a = -60
a = -60/0.75
a = -80m/s^2
Therefore, is decelerating at 80m/s^2