Recent content by thermocleanse

Homework Statement A projecticle launcher is shown in the attachment. A large current moves in a closed loop composed of fixed rails, a power supply, and a very light, almost frictionless bar touching the rails. A magnetic field is perpendicular to the plane of the circuit. If the bar has a...

i was tired and miscalculated density. thanks for correcting that. i get the same math as you do. so, the wire can "float" b/c of its small mass, right? thank you for your help.

thx 4 spelling it out. i just finished up what I've attached to this thread as you got me this new post. please have a look at these attached pages. i think it's on the right track, maybe even correct, but I'm afraid I've lost sight of one facet near the end, namely knowing how to use the...

ok...check this out...i think i got it...

please check this attachment out. i think that's it... if it is, thank you. if it isn't, thank you, anyway...

i've attached what i got. please check it out. i have all my process written out, with each circuit breakdown and whether that part is parallel or series. please check it out and let me know if/where i went wrong. thank you.

so, from the original circuit, do you agree that, when all combined, there are 2 resistors in parallel and one resistor that runs diagonal within the circuit?

i'm sorry, i don't get it. are you saying, just use F = IB, because L can be 1m? Then how do i incorporate the density of Cu?

but i don't have the length of the copper. i only have its diameter. is there another approach? thanks.

OK, so, now that I've broken down the circuit to what is pictured, can i break it down anymore? the last picture of the first attachment shows a circuit with 3 resistors, but i don't know at this point how to find the net resistance... please help, thanks.

I don't understand where the current is flowing. I've drawn where I think they go, based on the position of the batteries, but I am confused about where they go after this because they both seem to have the current meet up at the R2 juncture... please see the attachment here... thanks.

I'm using F(max) = qvB because it seems that it's 90 degrees. The field should be 90 degrees relative to the upward force, so the field is perpendicular, or horizontal, right? Also, because of the charge on the electron, i get a negative answer (in Tesla). does this mean that i indicate the...

Yes, F (max) = IlBsin(theta), because theta = 90 degrees...right?

Homework Statement An electron experiences the greatest force as it travels 2.9 x 10^6 ms in a magnetic field when it is moving northward. The force is upward and of magnitude 7.2 x 10^-13 N. What are the magnitude and direction of the magnetic field? Homework Equations The Attempt...

Homework Statement Suppose a straight 1.00-mm-diameter copper wire could just "float" horizontally in air because of the force due to the Earth's magnetic field, B, which is horizontal, perpendicular to the wire, and of magnitude 5.0 x 10^-5 T. What current would the wire carry? Does the...