53
i did it and got it right guys i hope it helps a lot
200N
Explanation:
600N-400N = 200N
A rotation motion is a motion that takes place around a fixed axis.
Like gears turning on each other.
# 7 the answer is 4) because you need opposites in order to attract
# 8 I'm going to guess it is 4) because electricity is needed in order a light bolt to work.(don't take my word for this one I'm not sure but, the other answer are correct)
# 9 the answer is 4) because the comb dose collect negative charges from the hair in order to make the hair have positive charge.
Hope this helped : )
