Finding charge with mass, length and separation

Averiex
Messages
1
Reaction score
0
I don't even know where to start..

Two styrofoam balls with the same mass (m=9.0x10^-8 kg) and the same positive charge Q are suspended from the same point by insulating threads of length (L=0.98 m). The separation of the balls is (d=0.020 m). What is the charge Q??
 
Physics news on Phys.org
Welcome to the forum.

First you should sketch the situation. Also include all forces acting on the balls.
 

Thread 'Modeling a graph that shows age in relation to depth of an ice sample'

To solve this, I first used the units to work out that a= m* a/m, i.e. t=z/λ. This would allow you to determine the time duration within an interval section by section and then add this to the previous ones to obtain the age of the respective layer. However, this would require a constant thickness per year for each interval. However, since this is most likely not the case, my next consideration was that the age must be the integral of a 1/λ(z) function, which I cannot model.
View full post »

Similar threads

The equipotential surface of a system of two unequal charges
Replies
3
Views
1K
Mass Spectrometer - Find Radial Separation of 58Ni+ & 60Ni+
Replies
1
Views
2K
Mass m oscillations with conductivity
Replies
1
Views
1K
Electrostatic Potential Energy of a Sphere/Shell of Charge
Replies
2
Views
4K
How Does a Variable Mass Affect a Simple Pendulum?
Replies
9
Views
3K
Charge separation of O-H bond in water molecule?
Replies
12
Views
870
Quantum harmonic oscillator coupled to electric potential
Replies
3
Views
2K
Path of a deflected charge? Solvable ODE's?
Replies
15
Views
2K
Finite dual disk capacitor: estimating charge distribution
Replies
1
Views
1K
Lagrangian of two masses connected by a pulley on inclined p
Replies
2
Views
5K

Hot Threads

Recent Insights

Back
Top