I need help with these question from physics. I decided to take on an extra practice worksheet to study but I'm stuck. Please solve and explain the questions below. Everything is given in the attachments, thanks!!

In an old school TV, the beam current is 60 micro coulombs. How long would it take for 3.75*10^14 electrons to strike the screen?Application Question 2 Based on the following circuit answer the questions below. IMPORTANT: You must attach a picture of your supporting work to this assignment. That work should include the original circuit diagram, 1-2 additional simplified circuit diagrams, margin work proving the correct addition of resistors, final Req calculation, Total Current calculation, and your filled in VIR chart. Circuit 2 129 What is Req? * 2 points O 52 Ohms O 26 Ohms O 13 Ohms O 10 Ohms What is Total Current? 2 points 4.7 A O 4.0 A O 2 A O 1 A