It will appear to be the color red
I know for number 4 the answer is c, sorry I can't help with the others.
Answer:

Explanation:
Hello,
Based on the acting force that is applied horizontally, one can propose the following equation based on Newton's laws:

Nevertheless, since we've got a angled force, it becomes:

In this case,
accounts for the formed angle, so the horizontal acceleration turns out into:

Best regads.
Answer:
They form when plates collide. I hope this helps you!