Hello! Yes I know this is a lot but let me explain. this is one question I promise. so the text at the top is the problem. I attempted it by myself. I believe I got A correct, so reassurance on that would be great. but when it comes to B and C, I don't know where to put the numbers as a plug in. please help me.

What is the role of lenses in microscopy?

If a negatively charged particle is placed at rest in an electric potential field that increases in the positive x-direction, what will the particle do? a. accelerate in the positive x-direction b. remain at rest c. accelerate in the negative x-direction

Emmy kicks a soccer ball up at an angle of 45° over a level field. she watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. consider only the time that the ball is in the air, after being kicked but before landing. take "north" and "up" as the positive ‑ and ‑directions, respectively, and use ≈10 m/s2 for the downward acceleration due to gravity.