The mine involves digging tunnels and shafts deep underground is the underground mining.
<h3>What is mining?</h3>
Mining is the digging of the Earth deep down in search of some precious elements or resources found on Earth.
Underground mining is the digging down into the earth in order to create tunnels. The shafts need to be inserted into those tunnels so that it reaches the deposits of resources.
Thus, underground mining involves digging tunnels and shafts deep underground.
Learn more about mining.
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Answer:

Explanation:
We know that charge on electron 

r= 2 nm
We know that force between two charge given

Now by putting the value


We know that mass of electron
The mass of electron

F= m a
a= Acceleration of electron
a= F/m


 
 
initial velocity given that zero ,u=0
 
 


 
        
             
        
        
        
<span>Solar panels convert light energy from sunlight into electricity energy , Metalloid is most likely used in solar panels  The answer is : </span> A metalloid is used because it is a semiconductor and can become more conductive when more light shines on it. Metalloids are  shiny,<span>  semiconductive and they are brittle.</span>