Homework Statement
[/B]
Three resistors are connected to a real battery. The open circuit voltage of the battery is 4.5 Volts. The voltage across the 5 Ohm resistor is 2.5 Volts.
A) What is the voltage across battery terminals?
B) What is the internal resistance of the battery?
Here's a...
Homework Statement
[/B]
An uncharged parallel-plate capacitor with spacing d is horizontal. A small bead with mass m and positive charge q is shot straight up from the bottom plate with speed v_0. It reaches maximum height y_max before falling back. Then the capacitor is charged with the bottom...
Homework Statement
Three electrons form an equilateral triangle 0.800 nm on each side. A proton is at the center of the triangle.
Homework Equations
U = k[(q_1*q_2)/r]
The Attempt at a Solution
I tried to use the following equation:
k*[(3e^2)/(0.8*10^-9) - (3e^2)/(0.4*10^-9)]
I plugged in...