Recent content by Barclay

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    Where will the pendulum land -- Probability Question

    Constraints: it takes longer time to move from 0 to 5 than it does from say 0 to 1 Assume that the time taken to move between integers is equal ... say 10 seconds Perhaps that helps?
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    Where will the pendulum land -- Probability Question

    OKAY you know better. There is no more information I can provide. I thought it would have been possible to work out : In 100 plays what is the probability of hitting NUMBER -2 (so losing -2 each time) compared with hitting either +3 +4 or +5 (and gaining 3, 4 or 5 point) If that can't be...
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    Where will the pendulum land -- Probability Question

    Hello Constraints: The game stops when pendulum/pointer hits -2. Then the person loses 2 points The game stops when pendulum/pointer hits +5 and then the person wins +5 points. The pendulum may never reach the -2 or +5
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    Where will the pendulum land -- Probability Question

    Thank you Peter Donis for helping me continue the question. I need to add the following: The pendulum/pointer can swing left AND right. Basically it can be anywhere at any given time. Basically I need to know what is the probability that the pendulum will hit -2 at which point the person...
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    Where will the pendulum land -- Probability Question

    YES THIS IS A BETTER DESCRIPTION My question is actually based on a casino game. I've made up the question by analyzing the basic pattern that is sort of mathematical. The actual game is more complex with BONUS PRIZES and FORFEIGHTS on certain numbers. There number line cane be up to 200 either...
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    Where will the pendulum land -- Probability Question

    Homework Statement Imagine a number line -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5 A pendulum begins at -1 and then swings towards the LEFT or RIGHT. There is no knowing how fast the pendulum is traveling or how much energy it has but will only swing LEFT or RIGHT. (I) Need to work out the...
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    Current, voltage : brightness of bulb in parallel or series

    Hello I'm working through a book (with answers) but am struggling with voltage, current, resistance and circuits. Please check my understanding below and let me know if I've finally understood. Thank you. In particular I'm confused in Q2 Q1. A student connects light bulbs, A and B, and...
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    Voltage & Current & Push & Force & Potential

    I've amended my EUREKA moment shown above. there were probably too many errors to sort out so no one replied so here's my revised version: Voltage / potential difference is the difference in the energy available to be released by the coulombs of electrons between two points (joules per...
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    Voltage & Current & Push & Force & Potential

    If voltage is not a type of force in the battery then what is pushing the electrons along the wire? I keep reading things about the electrons receiving a PUSH down a river on a incline. A PUSH is a force. What is the ELECTROMOTIVE FORCE? What is voltage then? Is it just a MADE UP CONCEPT to...
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    Voltage & Current & Push & Force & Potential

    Homework Statement I’m trying to understand what voltage is. Getting confused. I've written my confusion as questions below and answered the questions. (i) What is voltage? (ii) What is voltage passing through a lightbulb? (iii) Is POTENTIAL just another...
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    Confused about voltage & current -- Please check my understanding

    Hello, This is not a homework but I’m confused about current and voltage. My understanding is fragile and I need to reinforce it with your help. Below I’ve written what I think I know to be correct. Please correct me where required. This is high school physics.(i) Current is the...
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    High School Age 14 subject options

    I can see OPTION 3 is the best but maybe i should be asking is OPTION 2 really that bad (considering that maths chemistry and biology will be studied)? OPTION 2: Geography + food technology (cookery) + design technology (making stuff)
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    High School Age 14 subject options

    Please advise why. My son is sitting next to me huffing and puffing. He wants to do option 2
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    High School Age 14 subject options

    Hello, I urgently need advice on what options are best for a future career in (i) science (ii) a job unrelated to science. What options will open more doors into employment + offer more university degree courses Combination of options are: 1. Physics + food technology (cookery) + design...
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    Waves high school question -- Book answers are totally rubbish

    Thanks. Useful images to help me see what is going on
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