Recent content by samman010

Also, how would the permeability of the iron core change with temperature? Are there any equations?

Thanks mfb for your reply. Also the I got the formula from: http://en.wikipedia.org/wiki/Electromagnet#Force_between_electromagnets

Hi everyone. I was doing an experiment on the effects of varying the distance between the solenoid and magnet, the voltage across the solenoid, and temperature of the iron core inside the solenoid on the magnetic field produced and the magnetic repulsion between the solenoid and magnet...

Thank you for the replies! I will attempt this question again and hopefully get it right :)

No, the question I posted was a direct quote from my textbook so that is all the information available.

I have tried all the motion formulas, tried to find time and vertical velocity at maximum, tried rearranging and substituting and other stuff but I never seem to get the right answer. I initially used the equation: v2 = u2 + 2as to find "u" when "v" is 0 by substituting "s" for 1.2 m. I got...

Hi guys, I am really stuck with this homework question... The answer is 14.5 m/s but I do not know how to calculate it. A car has run into a fire hydrant and come to an abrupt stop. A suitcase tied to a rack on top of the car has been thrown off and has landed on the roadside 11.6 m away from...