Electromagnitic fields questions

[ruwi2]

Homework Statement

Question1-An alpha particle (two protons and two neutrons) traveling east at 2.0 x 105 cm/s enters a magnetic field of 2 mT pointing in the perpendicular direction. What is the force acting on the alpha particle? (2 Mark)


Question2-Two coils are connected in series and their inductance is 4.4 mH. When one coil is reversed, the total inductance is 1.6 mH. All the flux due to the first coil links the second coil but only 40% of the flux due to the second coil links the first coil. Find the self inductance of each of the coils and their mutual inductance. (2 Marks)


Question3-A ring made of a magnetic material has a total length of 150 cm and a cross sectional area of 10 cm2. The ring is wound by a wire of 960 turns. When the current is 2 A, the flux on the ring is 6 mWb. What is the relative permeability of the material at this flux density? (2 Marks)



Question 4-At a frequency of f = 1 MHz, verify that copper (σ=5.8×〖10〗^7 S/m,ϵ_r=1 ) is a good conductor, and quartz (σ=〖10〗^(-17) S⁄m,ϵ_r=4 ) is a good dielectric. (2 Marks)



Question 5-Determine the intrinsic impedance and depth of penetration of Copper (conductivity σ Cu = 5.80 × 107 S/m, μr = 1) at the following frequencies: (2 Marks)
100 Hz b. 5 MHz c. Compare on the results obtained at the two frequencies and write the conclusion



Question 6- For a medium in which ϵ_r=16,μ_r=4.5 and σ=0.6 S⁄m, calculate: (2 Marks)
the propagation constant at 400 MHz
the ratio of the velocity v to the free-space velocity c
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[ruwi2]

pleasezzzzzzzzzzzz guyz help me i have to submit this assigment as soon as possible

 

[Apphysicist]

I think there's some question as to what this is doing in PreCalc Math and (2) Applicable Equations and (3) Your Attempt at a Solution.

 

[HallsofIvy]

pleasezzzzzzzzzzzz guyz help me i have to submit this assigment as soon as possible

You have pretty much guarenteed that no one will help you by
1) posting a large number of problems at once.
2) Not showing any attempt to do the problems yourself.
Did you read the "sticky" giving the rules for this forum?

I am closing this thread. If you want help, post no more than 2 questions per thread and, most importantly, show what you have done yourself.