Answer:
A.
Explanation: both triple by 3
Average speed = (1/2) (beginning speed + ending speed)
= (1/2) ( 13 m/s + 30 m/s )
= (1/2) ( 43 m/s )
= 21.5 m/s
Answer: energy source, path, and load
Explanation:
A convex lens<span> makes </span>light<span> rays </span><span>converge </span>
