Answer:
Because if something is moving at a steady speed, it means we expect the increase in distance in a given time: Time is increasing to the right and distance is increasing steadily with time.
Answer:
The total energy of an electron in H atom is
.
Explanation:
Given that,
Radius ![R=8.784\times10^{-10}\ m](https://tex.z-dn.net/?f=R%3D8.784%5Ctimes10%5E%7B-10%7D%5C%20m)
We need to calculate the orbit number
Using formula of radius
![R=a_{0}n^2](https://tex.z-dn.net/?f=R%3Da_%7B0%7Dn%5E2)
![n^2=\dfrac{R}{a_{0}}](https://tex.z-dn.net/?f=n%5E2%3D%5Cdfrac%7BR%7D%7Ba_%7B0%7D%7D)
Where, a₀ = boar radius
n = orbit number
Put the value into the formula
![n^2=\dfrac{8.784\times10^{-10}}{0.529\times10^{-10}}](https://tex.z-dn.net/?f=n%5E2%3D%5Cdfrac%7B8.784%5Ctimes10%5E%7B-10%7D%7D%7B0.529%5Ctimes10%5E%7B-10%7D%7D)
![n=\sqrt{\dfrac{8.784\times10^{-10}}{0.529\times10^{-10}}}](https://tex.z-dn.net/?f=n%3D%5Csqrt%7B%5Cdfrac%7B8.784%5Ctimes10%5E%7B-10%7D%7D%7B0.529%5Ctimes10%5E%7B-10%7D%7D%7D)
![n=4.07](https://tex.z-dn.net/?f=n%3D4.07)
We need to calculate the total energy of an electron in H atom
Using formula of energy
![E=-\dfrac{13.6}{n^2}](https://tex.z-dn.net/?f=E%3D-%5Cdfrac%7B13.6%7D%7Bn%5E2%7D)
Put the value into the formula
![E=\dfrac{-13.6}{16.60}\ ev](https://tex.z-dn.net/?f=E%3D%5Cdfrac%7B-13.6%7D%7B16.60%7D%5C%20ev)
![E=0.8192\times1.6\times10^{-19}](https://tex.z-dn.net/?f=E%3D0.8192%5Ctimes1.6%5Ctimes10%5E%7B-19%7D)
![E=1.31\times10^{-19}\ J](https://tex.z-dn.net/?f=E%3D1.31%5Ctimes10%5E%7B-19%7D%5C%20J)
Hence, The total energy of an electron in H atom is
.
Option D,Plate Tectonics
In the rock cycle, surface events takes place at the surface of earth. Thus,
weathering and erosion are surface events, while the subsurface events he take place in the deeper section of the earth . Examples of sub surface events are plate tectonics and mountain building or anything that takes place in the inner core of earth.
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It increases with the motion of particles within a substance
I just took the test