1. Three electrons are placed at the coners of a 45 degree triangle (triangle is a right triangle). The distance along the horizontal and the vertical corners are 10^-8. Discover the magnitude and direction.(no a text book question)
2. A 1 kilo ohm resistor is connected to a capacitor to for man RC circuit. It's found that after 2 X10^-3s the voltage in the capacitor decreases to 10% of its initial value. What is the capacitance? (not from book)