Recent content by Gordianus

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    Capacitor charge time, two conflicting answers

    Charging a capacitor with constant current has been used many times in timing circuits.
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    Reconcile poundforce w/slug and lbmass

    If the spring scale was calibrated with the factor 32.2 in mind, it would read less than 1 pound of force
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    Not a typical RL circuit...

    What formula did you use for I(t)?
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    SR830 Lockin Amplifier

    I'm sorry but I don't understand what you want to do. Could you post a diagram?
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    SR830 Lockin Amplifier

    The SR 830 has a current measurement mode shown in the user manual. However, most Hall devices provide an output voltage. Do you want to measure a DC or AC magnetic field?
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    Faraday's Law and magnetic flux

    Can you make a nice drawing that shows how you came to the conclusion?
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    Calculating flux through a plane cutting two concentric cylinders

    I remember Gauss' Law refers to a closed surface. I think the plane isn't a closed one.
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    Calculation of charge flowing through a loop

    Let me plot with with Geogebra (can I do this?) the cosine part of the magnetic flux: The sign of the first derivative doesn't change in the range from zero to 120 degrees. Thus, if we assume the loop's resistance is high enough to neglect inductance effects, the induced flows in the same...
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    Calculation of charge flowing through a loop

    Keep in mind that flux carries a dot product and sign matters.
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    Calculation of charge flowing through a loop

    Why did you change from cos(beta) to |cos(beta)| ?
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    AI Consciousness?

    More than forty years algo, Isaac Asimov wrote several novels where robots were conscious. Asimov relied on the so called "positronic brain". These robots faced very human dilemma. I feel these novels give a good starting point to further the subject.
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    Charge on disk with non uniform surface charge density

    Usually, a disk has zero thickness. I think the answer key is wrong.
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    LED on CR2032

    Internet rules say that writing with caps on is equivalent to yelling. Having said that, how many leds have your strip? [Note: all caps OP has been fixed by the Mentors]
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    I Help Needed with Tracker Physics Program Measuring Acceleration

    From the first graph I see the speed changes from 1 m/s to 6 m/s in about 0.5 s. From this data I compute an average acceleration of 10m/s2. Not too bad at all. Finite differences from experimental data are frequently too noisy.
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