Could you help me with these questions?(Magnetic field and force)

In summary, the particle moves with an instantaneous velocity and a magnetic field is applied. The force exerted on the particle by the magnetic field is determined.
  • #1
physadam2
5
0
Can anybody help me with the solutions of one or more of these questions which are in the Book "University Physics 10th edition" chapter 28, questions: 1,4,9,13,29,57,58 Pleeeeeease

q1) A particle with a charge of -1.24 x 10(-8) C, is moving with instantaneous velocity v=(4.19x10(4) m/s)i + (-3.85x10(4) m/s)j.
What's the force exerted on this particle by a magnetic field
a) B = (1.40 T)i
b) B = (1.40 T)k?
-------------------------------------------
q4) A particle with a mass of 1.81x10(-3) kg and a charge of 1.22 x 10(-8) C has at a given instant a velocity v=(3.11 x 10(4) m/s)j. What are the magnitude and direction of the particle's acceleration produced by a uniform magnetic field B= (1.63 T)i + (0.980 T)j?
-------------------------------------------
q9)A circluar area with a radius of 6.50 cm lies in the xy-plane. What's the magnitude of the magnetic flux through this circle cue to a uniform magnetic field B = 0.230 T
a) in the +z direction?
b) at an angel of 53.1 from the +z-direction?
c)in the +y-direction?
--------------------------------------------
q13) An electron at point A in figure 38-39 has a speed v0 of 1.41 x 10(6) m/s. Find:
a) the magnitude and direction of the magnetic field that will cause the electron to follow the semicircular path from A to B;
b) the time requied for the electron to move from A to B.

vo
^
| /-----\
| / \
| / \
|/ \
O- v
A B
<--10.0 cm--->

-------------------------------------------

q29) A wire along the x-axis carries a current of 3.50 A in the naegative direction. Calculate the force (expressed in terms of unit vectors) on a 1.00 cm section of the wire exerted by these magnetic fields:
a) B= -(0.65 T)j;
b) B= +(0.56 T)k;
c)B= -(0.31 T)i;
d)B= +(0.33 T)i - (0.28 T)k;
e) B= +(0.74 T)j - (0.36 T)k.

------------------------------------------
and also who has the same book can help me with questions 57 and 58

I hope to answer these questions today or tomorrow! :(
 
Physics news on Phys.org
  • #2
Show us what you've done so far and where you got stuck.
 
  • #3
I want full answer/s for these questions, so I can practising on solving them!

because the physics exam is coming soon!
 
  • #4
Or, If you know a website that offers solutions for this book, I'll be glad!
 
  • #5
physadam2 said:
I want full answer/s for these questions, so I can practising on solving them!
Good one! :biggrin:
 
  • #6
Yes, It's a good one?!
it's not my home work! Infact, our teacher tells us that the exam in this chapter will be in Only these questions! I'm not lying, I want to practise only!
 
  • #7
Unless you have tests where you sit and watch someone else do them, us doing it all isn't very good practice.
 
  • #8
KingNothing, You are right .. You are the king of Nothing!,
Anyway, I solved all the problems myself except q57 and 58, and fortunately, Our teacher said leave them!

Thanks you guys for HELPING ME :mad:
I will think one thousand times before asking another question in this forum!

and by The way, I'm not specialist in physics, and thanks for god I didn't choose it! it's driving me crazy! or monkey .. Whatever! hope you guys enjoying it :biggrin:

GOOOD BYE
 

1. What is a magnetic field?

A magnetic field is a region in space where a magnetic force can be detected. It is created by the movement of electrically charged particles, such as electrons, and can be represented by lines of force that extend from a magnet's north pole to its south pole.

2. How is a magnetic field measured?

The strength of a magnetic field is measured using a device called a magnetometer. It can be measured in units of teslas (T) or gauss (G), with 1 T equal to 10,000 G. The strength of a magnetic field can also be measured qualitatively using a compass, which aligns with the magnetic field lines.

3. What is the relationship between magnetic field and force?

Magnetic fields exert a force on moving charged particles, such as electrons. This force is known as the Lorentz force and is perpendicular to both the direction of the magnetic field and the direction of the particle's motion. The strength of the force is determined by the strength of the magnetic field and the velocity of the particle.

4. How does a magnetic field affect materials?

Magnetic fields can affect different materials in different ways. Ferromagnetic materials, such as iron, can become magnetized and align with the external magnetic field. Diamagnetic materials, such as copper, are weakly repelled by magnetic fields. Paramagnetic materials, such as aluminum, are weakly attracted to magnetic fields.

5. How do we use magnetic fields in everyday life?

Magnetic fields have many practical applications in everyday life. They are used in generators to produce electricity, in motors to convert electrical energy into mechanical energy, and in MRI machines to create detailed images of the body's internal structures. Magnetic fields are also used in compasses for navigation and in credit cards to store information.

Similar threads

  • Introductory Physics Homework Help
Replies
9
Views
966
  • Introductory Physics Homework Help
Replies
25
Views
207
  • Introductory Physics Homework Help
Replies
1
Views
262
  • Introductory Physics Homework Help
Replies
7
Views
1K
  • Introductory Physics Homework Help
Replies
3
Views
136
  • Introductory Physics Homework Help
Replies
7
Views
276
  • Introductory Physics Homework Help
Replies
11
Views
1K
  • Introductory Physics Homework Help
Replies
7
Views
783
  • Introductory Physics Homework Help
Replies
31
Views
970
  • Introductory Physics Homework Help
Replies
4
Views
269
Back
Top