meeklobraca said:Homework Statement
Two equal charges exert an electric force on each other of 0.0385N when positioned 0.15 m apart. Determine the magnitude of the charge on each point.
Homework Equations
Fe=Kq1q2/R^2
The Attempt at a Solution
I narrowed it down to
q1q2=FeR^2/K
q1q2=96357.0634C^2
I squared this and I get q1q2=310.4143415C
This is not the answer to the question. I am close as far as the numbers go but I am not sure what I am missing here.
meeklobraca said:The answer given is 3.1 x 10-7 C
The answer I got was 3.1 x 10^2C right? So I figure the numbers are correct, just something missing, or maybe even the answer in the book is wrong.
meeklobraca said:yeah, that's been done.
meeklobraca said:I have here
qq=0.0385N x (0.15)(0.15) / 8.99x10^9
So I get
8.66x10-4 / 8.99x10^9
meeklobraca said:I tried it with an oline calculator and I got what you got, so I am not sure if the settings on my calculator are just messed up.
meeklobraca said:Its been a while since I've done that. How do you divide exponents? Can you give me a quick crash course?
meeklobraca said:OK see there we go.
I have 8.66x10-4 / 8.99x10^9 right?
Im taking 8.66x10^+4 and dividing it by 8.99x10^+9
But if I am dividing an exponent I am supposed to make the +9 a negative 9?
meeklobraca said:That was a typo on my part.
That makes perfect sense, I still don't get though why my calculator spits out 96329.25473
This is on a TI83 sci. calulator
8.6610^(-4)/8.9910^(9)
96329.25473
Coulomb's Law is a scientific principle that describes the electrostatic force between two charged particles. It states that the force between two charged objects is directly proportional to the product of their charges and inversely proportional to the square of the distance between them. This law can be used to calculate the magnitude of charge on an object by measuring the force between it and another charged object.
The unit of charge in Coulomb's Law is the Coulomb (C), which is defined as the amount of charge that passes through a point in one second when a current of one Ampere (A) is flowing. The unit of distance is meters (m), which is used to measure the distance between the two charged objects.
According to Coulomb's Law, the force between two charged objects is inversely proportional to the square of the distance between them. This means that as the distance between two charged objects increases, the force between them decreases. Therefore, the magnitude of charge on an object is directly related to the force between it and another charged object at a specific distance.
Yes, Coulomb's Law can be applied to determine the magnitude of charge on non-point charges, such as spheres or cylinders. However, in these cases, the distance between the two objects must be measured from their centers, rather than just the surface.
Coulomb's Law is related to other fundamental laws in physics, such as Newton's Law of Universal Gravitation. Both laws describe the force between two objects and follow the inverse square law, but they apply to different types of forces – gravitational and electrostatic. Coulomb's Law can also be derived from Maxwell's equations, which are the fundamental equations of electromagnetism.