Recent content by supersub

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    B Can you solve Penrose's chess problem and win a bonus prize?

    I can't see a white win. Say the white uses the furthest pawn forward to kill the castle... check... black can only use queen to block as there's another pawn if king is used so the queen takes the pawn then white takes queen with pawn and then black king takes pawn no. 2. Now pawn no. 3 (...
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    Investigation about the inverse square law of light radiation

    Ok Distance from LDR to filament bulb (x) in cm: Resistance in kohms (y) 2-------------------------------43.3 4-------------------------------45.6 6-------------------------------53.0 8-------------------------------60.2 10------------------------------69.1...
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    Investigation about the inverse square law of light radiation

    I did its in one of the pictures the table of results and now I've added the graph now seems ok. X-axis being the distance between ldr and bulb and y-axis being the resistance in Kohms. I haven't done the line of best fit yet just until I am sure how it should be
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    Investigation about the inverse square law of light radiation

    These are pictures of the write up sheet, that's my table of results there and i used the resistance for the y-axis and distance for the x-axis as it is on my results but now I am not so the sure, I couldn't get a picture of the graph as it won't come out right but it is pretty much a linear...
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    Investigation about the inverse square law of light radiation

    Homework Statement *Main ideas in bold[/B] Investigation of the inverse square law of light radiated from a light bulb. (done method, diagram, results and graph) Independent variable = the distance from the LDR (cm) Dependent Variable = resistance (k/ohms) Brief method: using an LDR, bulb...
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    Young's double slit experiment help

    Right so independent would be D from the equation and dependent variable is fringe spacing (W). You're right I just had to read my words ha. Just a few things needed, by slope do you mean gradient. I think the fringe spacing is on the y-axis is that right? Also so would one controlled variable...
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    Young's double slit experiment help

    Right. Yes it was a double slit of one piece. the slit separation was 0.25mm, and the D we started at 1metre from the light source and measured the fringes by using a paper as a screen and marking the fringes on the paper then using a small ruler measured around 10 of them added length and...
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    Young's double slit experiment help

    Yes I am familiar with the experiment. I have done a replica practical using a monochromatic light source (a red laser). Its not so much an essay but more of just a write-up/report of what we found. We needed to find the wavelength of the light source using the formula i gave above. We used a...
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    Young's double slit experiment help

    Hey sorry i thought it was common to know it because its how i learned it in class. IV= independent variable DV = Dependant Variable AS 1st year of A levels. Thanks for your help.
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    Young's double slit experiment help

    1. The statement, all variables and given/known data Hi I'm doing this experiment where we need to find the wavelength of our laser light source. I am unsure what the variables IV and DV would be and the controlled variables? Also how will I make the graph? I'm in AS level so please don't make...
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