Recent content by magmash

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    High School Calculate Circle Radius/Diameter from Surface Area

    Thanks for the replay Shyan. a circel with a diameter of 1.29mm 0.6452π = 1.30 The formula you mentioned √s/π gives a value of 0.362.. ? Could you show me an example, I would be very thanks full
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    High School Calculate Circle Radius/Diameter from Surface Area

    Hi How is circular surface area values square rooted ??. I am using this formula r2Xπ=mm2 to calculate the surface area of a circle but i want to know if there is a formula to get back to the diameter or the radius of the circle ?. example i have a circular surface area of 5.26mm2 and i want...
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    Undergrad Why doesn't tungsten wire resistance change when heated to incandescence?

    I have had no problem with measuring DC currents, did the same experiment with a light bulb and got what i expected, higher resistance. Does the resistance get higher with the temperature on every conductor Copper, Aluminum, ect ?
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    Undergrad Why doesn't tungsten wire resistance change when heated to incandescence?

    Hi guys I have been playing around with a piece of tungsten wire by supplying it with 12Vdc and measuring the current draw to see how much the resistance changes when the wire is glowing hot. while doing this i am not getting any change in the resistance, the wire has the same resistance when...
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    Static electricity and circuit breakers

    Hi I have seen electric technicians while racking out high tension circuit breakers, use a wire that has one end grounded and they use the other end to touch the bus bars on the breaker in case of a static charger, they carry out this procedure before they do any work on the CB in case they...
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    Undergrad How can rigid bodies with smooth surfaces bounce if they don't deform?

    Lets assume that we have a stone and a surface that don't deform, would dropping the stone down on the surface not result in any sound ? I appreciate your kind responds : )
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    Undergrad How can rigid bodies with smooth surfaces bounce if they don't deform?

    so speaking in simple terms, there is nothing purely rigid in this world every thing deforms during a collision, and that is what is responsible for the bouncing effect that we can observe, am i right ? P.S Is it possible to observe the deformation of an very rigid/solid object during a...
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    Undergrad How can rigid bodies with smooth surfaces bounce if they don't deform?

    Hi guys enlighten me, How can Rigid bodies with smooth surfaces bounce in a collision An example is, drooping a metal sphere on a metal surfaceis there any deformation happening here as in the situation of a basketball ?
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    High School How Do Magnets Generate Forces?

    Hi Is there an explanation of how,why a magnet create a force ?
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    High School How do we know the number of electrons and protons in an atom?

    could anyone here recommend a good book where I can find and read about this thing ?
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    High School How do we know the number of electrons and protons in an atom?

    well what is the proof that the hydrogen atom has one electron
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    High School How do we know the number of electrons and protons in an atom?

    Hi all if we can't see an atom, how do we know how many electrons and protons by number it have ? please be as detailed as possible
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    High School Does Newton's third law apply to magnetic forces in electric motors?

    Well what I mean is, example when we spray water at an object let's say a standing piece of plywood, the ply wood will fall down due the the force of the water particles hitting the plywood, Well how does the magnetic force work ? is there any atom,particle collisions causing the force ?