Well we can always smell things like if food smells bad or if we smell something we have to know whether that smell is good or bad. You could be able to smell animals that are dangerous. Or animal droppings, to know what animal it is if you are in danger.
Answer:
Explanation:
We are given that
Potential difference=V=154 V
Surface charge density=
Using 
We know that
Where
Using the formula
Using 
Hence, the spacing between the plates=
I think the elevation of Y and Z are the following:
<span>Y=3200,
Z=2900 </span>
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Below are the choices the can be found elsewhere:
A.) 14 newtons upward
<span>B.) 45 newtons upward </span>
<span>C.) 67 newtons upward </span>
<span>D.) 130 newtons upward </span>
<span>E.) 150 newtons upward
</span>
The answer is A.) 14 newtons upward
