Recent content by mattwkeller

Understood. The difference in that case is the rotor has copper inlays or aluminum bars arranged on the steel shaft. In this case would the reversible solenoid need those in order to reverse? Would it still reverse but not be as efficient with a plain steel plunger?

So could a three phase solenoid with a coil for each phase be bidirectional for a ferrous non-magnetic plunger?

I am referring to non mechanical linear motors, similar to coil guns or induction rails on roller coasters. I thought I understood the concept in solenoids until I found out about induction linear motors without permanent magnets, which seem to counter the operation of a one-way solenoid.

I am trying to understand the differences in design between a traditional solenoid with a ferrous plunger vs linear motors that use either induction or permanent magnets. From my understanding, a traditional solenoid, whether DC or AC, cannot fire in both directions with polarity switching since...

Okay, thank you.

Yes, sorry about that. They are in amps. I missed the scientific notation in my matrix. Should I1= -8.461e(-4)?

Sorry, struggling getting the picture up...in the meantime my answers are: I1=-8.461 I2=-.00392 I3=-.00477

Homework Statement Find the currents going through each resistor. Homework Equations V=IR The Attempt at a Solution [/B] I have the problem worked out and I can't find any errors in my work. The issue is that my professor has: I1=-.0843 I2=.086 I3=.0017 However my physics professor is...

Homework Statement Im given a problem where I am supposed to utilize the concept of conservation of energy to find an object initial velocity. There is a force that works on an object. They give me the amount of work done in BTU and the other units are in lb, ft/sec, ft/sec^2...Then I...

Ahh that makes sense. Thank you!

So even when a conducting object is placed on the inside surface of the cup, it isn't enough to disrupt this electron formation? Just seems hard to believe that none of the charge transfers!

Oh, the electrons would end up forming a pattern the maximizes distance, but since they are repelling the would only end up on the outside of the cup. Correct?

The charges would distribute equally throughout the metal, trying to get as far away from each other as possible...it would be a pattern that maximizes distance in between each charge.

So F=kqQ/r^2 and E=kQ/r^2As the distance gets smaller the force and field strength increases. Is this what I'm supposed to be relating?