Answer:
Chemical symbols Al, O, H, O or a,c,f,h.
Coefficient 2 or e.
Number of atoms of the element - b,d ,g.
One atom of the element - i.
I halved the speed of light in vacuum to get the speed of light in the material, since the speed of light in vacuum is twice the speed of light in material.
The index of refraction is essentially the speed of light through a vacuum divided by the speed of light through given medium.
I attached some notes on refraction too, hopefully this helps :D
<span>Total displacement =10
</span><span>Average velocity =6.7</span>
Answer:
The correct option is option (B)
Explanation:
Given that,
The equation below show the total amount of water in gallons, y that has flowed through two different types of showers heads after x minute.
Type A: y =1.25 x
Type B: y= 2.50 x
So,
The amount of water per minute is 
For type A
y =1.25 x

For type B
y =2.50 x


The amount of water flowed through Type B is twice that flowed trough type A per minute.