SPH4U University Grade 12 Physics - Coulomb's Law?

AI Thread Summary
The discussion revolves around solving a physics problem using Coulomb's Law involving three point charges arranged at the corners of a triangle. The user is tasked with calculating the magnitude of a third charge, q₃, given two negative charges, q₁ and q₂, and the direction of the resultant force on q₃. There is a request for clarification on the arrangement of the charges, as the user is unsure how to begin the calculations. The conversation highlights the need for visual aids or detailed descriptions to facilitate understanding of the problem setup. Overall, the focus is on applying Coulomb's Law to determine the unknown charge based on the forces acting on it.
burhan101
Messages
1
Reaction score
0

Homework Statement



SPH4U University Grade 12 Physics - Coulomb's Law?
I have to determine the answer using Coulomb's Law. Please help me figure out how to do this !

Three point charges, q₁= -5.00 μC, q₂= -4.00 μC, and q₃ which is negative are arranged as shown on three corner of side a=0.500 m. The direction of the forces on qt is at +20.0° with respect to the + x axis.
Calculate the magnitude of q₃

Homework Equations



Coulomb's Law

The Attempt at a Solution



I don't even know how to start :confused:
 
Physics news on Phys.org
Can you attach a picture or describe how q1 and q2 are situated?
 

Thread 'Errors and significant figures'

I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
View full post »
Thread 'A cylinder connected to a hanging mass'

Thread 'A cylinder connected to a hanging mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
View full post »

Similar threads

Find the magnitude of the electric force from 3 charges at vertices of a cube
Replies
17
Views
2K
Coulomb's Law and Conditional Convergent Alternating Harmonic Series
Replies
11
Views
2K
Conceptual understanding/question of guass and Coulomb’s law
Replies
5
Views
2K
Coulomb's Law Question grade 12
Replies
1
Views
3K
Work, energy, power unit (coulombs)
Replies
2
Views
1K
Three charges constrained to a ring
Replies
4
Views
1K
Calculating Charge and Force Using Coulomb's Law and Trigonometry
Replies
6
Views
8K
Using Gauss' Law to find the field at a point
Replies
6
Views
1K
Introduction to Electrostatics -- Positive charges at the corners of a triangle
Replies
9
Views
2K
Q) Deriving Gauss' Law from Coulomb's Law for a Single Point Charge
Replies
1
Views
2K

Hot Threads

Recent Insights

Back
Top