Answer: A
Explanation:
From the figure given as attachments, the error pointing upward signifies the incident ray while the one point downwards signifies the reflected ray.
One of the laws of reflection is stated that the angle of incidence is equal to the angle of reflection.
Since the two arrows are parallel to each other, then the mirror must be perpendicular to the two arrows. That is, the incident ray and the reflected ray must be perpendicular to the mirror.
Option A is the correct answer.
When you rub the balloons, it will take electrons away, which is negative. So, the balloons are negative
The copper needed to be heated and manipulated (or shaped)
Explanation:
Ice floats on water because it's alil water compacted into 1 shape which is heavier, ice is also a solid at 1st so solid things also can float on water
Answer:
Explanation:
Subtract both sides by 
:
Divide both sides by -2*a:
Add both sides by 
:
Subtract both sides by 
:
