That's false. No medium = no sound.
Answer:
They:
-Are far from each others
-Move constantly
-Move freely (all directions)
-Move at high speed
The correct answer is
<span>c) very small and very large
Let's see this with a few examples:
1) if we have a very small number, such as
</span>

<span>we see that we can write it easily by using the scientific notation:
</span>

<span>2) Similarly, if we have a very large number:
</span>

<span>we see that we can write it easily by using again the scientific notation:
</span>

<span>
</span>
Explanation:
direction of electric field is same as that of force experienced by the test charge