Calculating Proton Speed at Points A and B with Fixed Charge -60 x 10^-9C

  • Thread starter Thread starter binhbinh
  • Start date Start date
  • Tags Tags
    Lab
AI Thread Summary
The discussion revolves around calculating the speed of a proton at point B, given a fixed charge of -60 x 10^-9C at point X and the proton's initial speed of 12 x 10^5 m/s at point A. There is confusion regarding the notation of the charge, particularly the mention of an imaginary component (-60j), which raises questions about its meaning in the context of physics. Participants seek clarification on how to approach the calculation and the implications of using imaginary numbers in this scenario. The conversation highlights the need for a clear understanding of electrostatics and motion in electric fields. Overall, the thread emphasizes the importance of accurate charge representation in physics problems.
binhbinh
Messages
2
Reaction score
0
Hi,

I'm having troubles with this problem off my lab and I'm wondering if any of you guys could help me with this one.



Suppose you have fixed charge of -60 x 10^-9C at point X. Points A and B are at distances of 0.04 meters and 0.14 meters from X, respectively.

Calculate the speed of point B of a proton that was moving to the right at point A with a speed of 12 x 10^5 m/s.


edit: fixed the problem up, was a typo.
 
Last edited:
Physics news on Phys.org
>fixed charge of -60j x 10^-9C at point X

What does that mean? How can charge be an imaginary number? -60jnC?
 
up, anyone?
 

Thread 'Struggling to understand the concept of this question (ice cube in water optics question)'

TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
View full post »
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
View full post »

Similar threads

Help with Mathematical Description & Calculations of Space Charge Density
Replies
5
Views
1K
Point charge with very thin metal sheet along a spherical surface
Replies
21
Views
2K
Proton falling through tiny hole on charged shell
Replies
1
Views
985
Calculate Electric Potential from Non-uniform Linear Charge
Replies
20
Views
6K
Finding the force of repulsion between two point charges
Replies
5
Views
2K
Force on a test charge due to two point charges?
Replies
13
Views
3K
Calculating Distance: Particle's Travel with Fixed Charge at 55cm
Replies
8
Views
2K
Given current and density of electrons, what is their speed?
Replies
2
Views
2K
Find the charge of 2 point charges, given Uelec and total charge
Replies
1
Views
15K
Electric Potential Energy Problem
Replies
3
Views
2K

Hot Threads

Recent Insights

Back
Top