Calculating Net Charge of Three Charges in a Row

AI Thread Summary
The discussion revolves around calculating the net force on three charges arranged in a straight line. The first two charges are positive, each with a value of 5.00 x 10^-5 C, while the third charge is negative at -2.50 x 10^-5 C. The user initially calculated the forces acting on each charge, reporting values of -30444N for the first, -7875N for the second, and 33681N for the third. Participants suggest clarifying that the inquiry is about net force rather than net charge and encourage showing the work for at least one charge to verify the method used. Accurate calculations and clear methodology are essential for confirming the results.
Coco12
Messages
272
Reaction score
0

Homework Statement




Three charges are in a straight row. The first charge has a value of 5.00 x 10-5 C. The second charge also has a value of 5.00 x 10-5 C and is 2.50 cm to the right of the first charge. The third charge has a value of -2.50 x 10-5 C and is 2.00 cm to the right of the second charge.
Find the net charge in the first, second and third charge

Homework Equations



F=kq1q2/r^2

The Attempt at a Solution



Just wanted to check if I'm doing this right.
For the first charge, I got -30444N , the second ; -7875N and the 3rd; 33681N.

Thanks
 
Physics news on Phys.org
Coco12 said:

Homework Statement




Three charges are in a straight row. The first charge has a value of 5.00 x 10-5 C. The second charge also has a value of 5.00 x 10-5 C and is 2.50 cm to the right of the first charge. The third charge has a value of -2.50 x 10-5 C and is 2.00 cm to the right of the second charge.
Find the net charge in the first, second and third charge
I take it you meant net force.

Homework Equations



F=kq1q2/r^2

The Attempt at a Solution



Just wanted to check if I'm doing this right.
For the first charge, I got -30444N , the second ; -7875N and the 3rd; 33681N.

Thanks
Show your work for at least one charge, and we can tell you if your method is correct.
 

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

Calculate the Capacitance given the Charge and Potential Difference
Replies
1
Views
637
Where must a third charge be placed to get a net force of 0
Replies
21
Views
3K
Determine the net charge of sphere C
Replies
2
Views
1K
Electric field with three charges and a point
Replies
1
Views
3K
What is the initial charge of the second object in Coulombs?
Replies
3
Views
2K
Calculate Net Electric Field at Point P | Two Charges 42cm Apart
Replies
4
Views
2K
Calculate Net Charge Contained by the Cube
Replies
15
Views
4K
How to Rank Charge Density of Conductive Spheres?
2
Replies
61
Views
5K
Force on a particle of a linear charge distribution
Replies
1
Views
2K
Charge density and charge on a conductor
Replies
15
Views
4K

Hot Threads

Recent Insights

Back
Top