Recent content by Sam_The_Great

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    Magnetic fields and Circular Orbits Question

    Thanks for the assurance vivek. Did I need to integrate? I found the radius from the amount of time it took to complete half a circle. I found the velocity from change in voltage(charge) = 1/2 mv^2. and then I found the mag field from r =vm/qB. That's the correct approach to take right...
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    One Question about Long wires and Mag fields, want to verify please.

    Thanks vivek. Another part of the question, how would it change that the infinite wire's magnetic field is not uniform versus being uniform. From my equation F = Ilb, do you think I took the right approach to get the dF equation? I don't completely understand that equation, but I somewhat...
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    One Question about Long wires and Mag fields, want to verify please.

    Hello, I have this problem and I want to verify if somebody thinks I did it right. The figure shown below shows an infinitely long wire carries current I1 = 20A. A short wire of length 9cm lies perpendicular to the direction of the long wire. The nearest end of the short wire is 3 cm away...
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    Magnetic fields and Circular Orbits Question

    Thanks you, I think I got the right answer, my magnetic field is just a little huge, like 16.4 T which just doesn't seem right, but I took the approach you put and also since T = 2pir/v and we know how long it took to complete half a revolution, I solved it. Thanks again Doc.
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    How Does Current Affect Spring Extension in a Magnetic Field?

    I have the following problem on which I am unsure how to proceed. A spring with a spring constant K = 20 N/m is shown below. It is stretched 1 cm from its equilibrium position when a current I passes through the wire. How big is the current in the wire? The magnetic field is coming out...
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    Magnetic fields and Circular Orbits Question

    Hi, does anybody know what approach to take with the following problem. An electron is accelerated from rest through a potential difference of 500V, then injected into a uniform magnetic field. Once in the magnetic field, it completes half a revolution in 2 ns. What is the radius of the...
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