Another Electromagnetics question...
Two long wires carry equal, but oppositely directed, 25 A currents. What is the magnitude of magnetic field due to these currents at point P? The wires are 0.1 m apart and point P is 0.05m in between the wires.
Would the following be the correct way to...
Ah, yes.. you're correct! (Our class doesn't tend to use sig figs very often, so I think that's where I got confused)
Thanks so much for the help!
I'll write down my steps a little more clearly next time I post a question, too.
The choices are:
A) 2.7 * 10^-26 kgm/s
B) 1.0 * 10^-21 kgm/s
C) 1.7 * 10^-12 kgm/s
D) 5.2 * 10^-4 kgm/s
The answer I got was 9.96 * 10^-22 using Momentum = QBR
mv = QBr
P = (1.6*10^-19)(0.075)(0.083)
P = 9.96 * 10^-22
That's what I did.
An ion with a change of 1.6*10^-19 enters a 0.075 T magnetic field. If the ion follows a circular path of radius 0.083m, what is the momentum of the ion?
I tried manipulating Fc = Fmagnet into Momentum = QBr, but that didn't work... any ideas?
Thanks!
The section in bold confuses me... what were you trying to say there?
Also, I may be missing something, but how would you find the acceleration in the y direction? I'm a little confused from your explanation... :frown:
Electrons traveling in a circular path of a radius 2m at a rate of 1.0*10^6 revolutions per second are diverting into a region between two charged plates iwth a potential difference of 40V. These plates are 3.2cm long and are separated by 8mm. As the electrons emerge from the region between...
A 5kg model vehicle traveling at 14 m/s experiences a rocket boost of 85N (in the direction of motion) for 20s. What is the resulting speed?
I tried using:
F = mv/t, but that didn't work out for me.
85 = 5v/20
85*20 = 5v
1700/5 = v
v = 340 m/s
but, that's wrong... what am I doing...
Ah, yes! That makes sense. After I find out the velocity in the y direction, should I use that velocity for kinetic energy, or should I use a^2 + b^2 = c^2 to find out the hypotenuse and use that velocity? Thanks!
Two objects with a mass of 4kg are sliding across ice at a constant velocity of 12 m/s east. After an explosive charge separates the two masses, they are found to be traveling at 50 degrees north of east and 50 degrees south of east respectively. What is the change in kinetic energy of the...