- #1
NutriGrainKiller
- 62
- 0
Problem 1:
knew to find the acceleration I needed to use a=QE/M, but since I didn't have E I had to find it. Used F(mag field)=Q*V*B*Sin(theta). I found theta from drawing the ijz axis and using trig, I got 59 degrees.
After I solved this I plugged it into F=QE to get E. Then plugged that into a=QE/M, and got an incorrect answer..not sure where I went wrong.
Problem 2:
for a:
equations I used:
P=MV
R=MV/QB -> V= RQB/M
plugged 2nd into 1st, M cancelled, answer wasn't correct. eh?
for b:
not sure i know the equation for this problem...same as in classical physics?
thanks guys!
here is what i did:A particle with mass 1.81*10^-3 kg and a charge of 1.22*10^-8 C has, at a given instant, a velocity v = 3.00*10^4 m/s jhat.
What is the magnitude of the particle's acceleration produced by a uniform magnetic field B=1.63T ihat + 0.980T jhat?
knew to find the acceleration I needed to use a=QE/M, but since I didn't have E I had to find it. Used F(mag field)=Q*V*B*Sin(theta). I found theta from drawing the ijz axis and using trig, I got 59 degrees.
After I solved this I plugged it into F=QE to get E. Then plugged that into a=QE/M, and got an incorrect answer..not sure where I went wrong.
Problem 2:
A particle with charge 6.40 *10^-19 C travels in a circular orbit with radius 4.68 mm due to the force exerted on it by a magnetic field with magnitude 1.65 T and perpendicular to the orbit.
a) What is the magnitude of the linear momentum P of the particle?
b) What is the magnitude of the angular momentum L of the particle?
for a:
equations I used:
P=MV
R=MV/QB -> V= RQB/M
plugged 2nd into 1st, M cancelled, answer wasn't correct. eh?
for b:
not sure i know the equation for this problem...same as in classical physics?
thanks guys!