Help with proton moving through magnetic field.

AI Thread Summary
To solve the problem of a proton moving through a magnetic field, the relevant equation is F = q(v x B), where the force depends on the charge, velocity, and magnetic field. The proton's speed is given as 5 x 10^6 m/s, and the magnetic field strength is 6 x 10^-2 T. It's crucial to ensure that the magnetic field and velocity are at right angles; otherwise, the equation should incorporate the sine of the angle between them. The correct approach involves calculating the force using the perpendicular component of the magnetic field. The discussion emphasizes understanding the relationship between the vectors involved to determine both the magnetic force and the proton's acceleration accurately.
jhcollaz
Messages
3
Reaction score
0

Homework Statement



I need help with a problem I was just given an equation (F =q VxB )at the end of class and expected to solve a problem but I am not sure what to do.
A proton is moving at speed 5x106m/s in the magnetic field of magnitude 6x10-2 T indicated in the diagram. a) find the magnitude and direction of the initial magnetic force on the proton. b)what is the magnitude of the acceleration of the proton?
The diagram and work are in the work below. I was not sure what to do so i looked through the book and found another equation.

Homework Equations





The Attempt at a Solution


http://imgur.com/l9NBN

 
Physics news on Phys.org
B is the strength of the magnetic field, which you are given. Not sure why you did the working that you did, it doesn't make any sense lol.
 
Your equation enables you to calculate the force = Bqv BUT this equation is used when B and v are at right angles. For your diagram you need the component of B at right angles to v.
So your equation should have BSinθ instead of B.
I hope that you can follow this!
 

Thread 'Rolling without slipping on a curved surface'

Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
View full post »

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 »

Similar threads

Proton vs electron, find the magnetic field for the electron
Replies
9
Views
2K
Is today's exam question unsolvable? - Proton Motion in a Magnetic Field
Replies
7
Views
2K
How Does a Proton Behave in a Magnetic Field?
Replies
16
Views
6K
Angle of deviation from a magnetic field
Replies
5
Views
2K
Solving Two Charged Plates Homework: Magnetism, Frequency & Charge Density
Replies
3
Views
2K
Determine the force with which the magnetic field of a coil acts on an infinitesimal cube of iron
Replies
6
Views
970
Magnetic field pointing into a normal magnetized compass needle
Replies
16
Views
1K
Motional EMF in the presence of a time-varying magnetic field
Replies
11
Views
3K
Work Done by an Induced Electric Field
Replies
2
Views
2K
Electric and Magnetic Fields: A Proton's Motion
Replies
5
Views
2K

Hot Threads

Recent Insights

Back
Top