The process of changing from one phase of matter to another is a physical matter.
IM sure there is C, D, and E in kuiper belts, but not really sure of silicon and iron
Assuming it's an ideal material, the answer is A.
The speed of sound depends on the medium that the sound travels through.
Answer:
<em>The distance covered by comet is </em>
Explanation:
Speed is defined as the rate of change of distance with time. It is given by the equation speed= 
Thus distance= 
In this problem it is given that speed of comet= 
time travelled by the comet= 4 hours
Thus distance= 
= 
= 