Velocity Selector Homework: Determine Proton Speed for No Deflection

  • Thread starter Thread starter Ryo124
  • Start date Start date
  • Tags Tags
    Velocity
AI Thread Summary
To determine the proton speed for no deflection in the presence of electric and magnetic fields, the forces acting on the proton must be balanced. The electric field strength is 1.30×10^5 V/m, while the magnetic field strength is 2.30 T. The magnetic force, given by F = qv x B, must equal the electric force to achieve constant velocity. The required speed can be calculated by equating the magnitudes of these forces. Understanding the relationship between electric and magnetic forces is crucial for solving this problem.
Ryo124
Messages
101
Reaction score
0

Homework Statement



A proton enters a space in which there are both electric and magnetic fields. The electric field points vertically upward and the strength is 1.30×105 V/m. The magnetic field points horizontally to the right and the strength is 2.30 T.

The proton enters with a velocity vector that is perpendicular to both the electric and magnetic fields, and the magnetic force is opposite to the electric force.

Determine the proton speed such that the proton will pass through the space with no deflection, i.e., with a constant velocity vector.

Homework Equations



I am not sure what equation to use.

The Attempt at a Solution



Can someone please help? I'm not sure where to begin.
 
Physics news on Phys.org
Ryo124 said:

Homework Statement



A proton enters a space in which there are both electric and magnetic fields. The electric field points vertically upward and the strength is 1.30×105 V/m. The magnetic field points horizontally to the right and the strength is 2.30 T.

The proton enters with a velocity vector that is perpendicular to both the electric and magnetic fields, and the magnetic force is opposite to the electric force.

Determine the proton speed such that the proton will pass through the space with no deflection, i.e., with a constant velocity vector.

Homework Equations



I am not sure what equation to use.

The Attempt at a Solution



Can someone please help? I'm not sure where to begin.

F = qv x B

You will need to offset the electric force with the force created by qv x B.
 

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

Electric Field Force Exerted Vertically
Replies
9
Views
8K
Charged particle entering velocity selector
Replies
1
Views
3K
Sinusoidal Radiation Statements (T/F)
Replies
2
Views
967
Is today's exam question unsolvable? - Proton Motion in a Magnetic Field
Replies
7
Views
2K
Electric and Magnetic Fields: A Proton's Motion
Replies
5
Views
2K
Nullifying Lorentz Force on Proton Moving in Parallel Direction
Replies
2
Views
1K
What Direction Does the Electric Field Point in This Scenario?
Replies
7
Views
2K
Solving Two Charged Plates Homework: Magnetism, Frequency & Charge Density
Replies
3
Views
2K
Work Done by an Induced Electric Field
Replies
2
Views
2K
Motion of charge in electric and magnetic fields
Replies
8
Views
2K

Hot Threads

Recent Insights

Back
Top