Homework Statement
A car moving at 20m/s starts decelerating, travels distance d, and stops. Find the car’s velocity at distance d/2.
Homework EquationsThe Attempt at a Solution
my brain is fried. I feel like I’m missing something obvious but I just don’t get it.
1. The problem statement
Two charges of 3μC and -2μC are placed 2cm apart. At what point along their connecting line is electric potential zero?
Homework Equations
Electric potential superposition Φ=Φ1-Φ2 since q2 is negative
Φ=kq/r^2
The Attempt at a Solution
Let’s say the charges are on the...