Recent content by ChrisWM

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    Calculating Magnitude Difference: Is it Right?

    I have found the difference in the magnitude from the counts to be -.073 using -2.5log(11347/10606) but I m unsure if this is right or how to calculate the uncertainty
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    The Power of Simultaneity: Tips for Taking the First Step

    What is my first step here? I'm not sure of where to start?
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    How to Determine the Liquid's Refractive Index in a Newton's Rings Experiment?

    I have no idea where to start with this. My professor didn't give an example and I am very confused.
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    Compton Scattering: Determining the Energy of a Scattered Gamma Ray

    I'm unsure of how to proceed here. Would I use the equation E(gamma prime)= E(gamma)/(1+(E(gamma)/(mc^2)(1-cos(theta))) ? Also, do I keep the .662 Mev as is or do I convert to joules?
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    Find the ratio of the energy of the La characteristic x-ray to the Ka

    Thanks!
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    Find the ratio of the energy of the La characteristic x-ray to the Ka

    I found my energies for Potassium. I have 3.3 KeV for the k alpha nd 254.6 ev for L alpha, using z=19 and n=3. Are these values correct? Edit: I found the ratio to be .077
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    Rutherford Scattering of an Alpha Particle

    Thank you so much!
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    Rutherford Scattering of an Alpha Particle

    I have the equation but I am unsure of what my r min would be. Is it the sum of the radii or the difference? I am also confused on what z1 would be. I am fairly sure z2 is the atomic number of Fe(26) but I am unsure of this as well. Edit: I just read that z1 could be 2, is this correct?
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    Circuits and the percent change of current when the switch is closed

    For an ideal battery (r = 0 Ω), closing the switch in (Figure 1)does not affect the brightness of bulb A. In practice, bulb A dims just a little when the switch closes. To see why, assume that the 1.50 V battery has an internal resistance r = 0.30 Ω and that the resistance of a glowing bulb is R...
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    Percent Change Of current when the switch is closed

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    Percent Change Of current when the switch is closed

    Here is the actual problem; For an ideal battery (r = 0 Ω), closing the switch in (Figure 1)does not affect the brightness of bulb A. In practice, bulb A dims just a little when the switch closes. To see why, assume that the 1.50 V battery has an internal resistance r = 0.30 Ω and that the...
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    Percent Change Of current when the switch is closed

    Here you go!
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    Percent Change Of current when the switch is closed

    (.174A-.181A)/.181A=-3.86% but it says it wrong, and I did (.181A-.174A)/.174A =4.02% but this was wrong too. I've tried 3.87%,3.86%,-3.87%,-3.67%,4.02%, and -4.02% but all were wrong. I'm really not sure what to do here.