Homework Help: Physics

Posted by Anonymous on Monday, June 25, 2012 at 11:33pm.

2 queations:
1) a proton enters a magnetic feild at a right angle to the field. an alpja particle enters the same field at the same angle but with twice the speed. once in the magnetic field both particles move in a circular path. the raito of radius of the alpha particles path to the radius of the protons path is?
[4:1]

2) a proton and an alpha particle have an identical circular orbits in a magnetic field. the proton has a speed of 4.4 m/s. the speed of the aplha particle is?
[2.2^5 m/s]

thank you

Physics - ajayb, Tuesday, June 26, 2012 at 4:55am
1) r = m*v/(q*B)
r(a)= m(a)*2v/(q(a)*B).....(1)
r(p)= m(p)*v/(q(p)*B).....(2)

r(a)/r(p)= m(a)*2v*q(p)/[m(p)*v*q(a)]
= 4m(p)*2*q(p)/[m(p)*2q(p)]
= 4*2/2 = 4

2) Ma*Va/[Qa*B] = Mp*Vp/[Qp*B]
So, Va = 4.4*2/4 = 2.2m/s

Answer this Question

Related Questions

physics-Electric & magnetic fields - A proton traveling at 10^4 m/s in the ...
physics - A proton traveling at 10^4 m/s in the positive x-direction, enters a ...
physics - A proton traveling at 10^4 m/s in the positive x-direction, enters a ...
physics 30 - An alpha particle moving at a speed of 5.20x10^4 m/s enters a ...
physics - proton and electron enters in magnetic field at an angle 30 degree ....
physics - A moving proton with a speed of 0.3 m/s experiences a force of 1.5*10...
Physics - A proton experiences a force of 4 Newton when it enters perpendicular ...
physics - A 160 MeV proton, moving in the x-direction, enters a region in which ...
Physics - An -particle has a charge of +2e and a mass of 6.64 10-27 kg. It is ...
physics - The solar wind is a thin, hot gas given off by the sun. Charged ...

For Further Reading

First Name:
School Subject:
Answer: