Recent content by Celluhh

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    Endothermic Reactions: Activation Energy & Heat Transfer

    every reaction requires its reactants to have enough actvation energy in order to start the chemical reaction.sometimes, extra energy is provided in the form of heat. so the reactants take in heat from the surroundings and have enough energy to break old bonds and form new bonds. when they break...
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    High School Pascals Principle: Pressure in Enclosed Fluids Explained

    So the pressure exerted by the master piston is the pressure that acts on the slave piston to produce a force to lift the load right ? Without the force applied at the master piston nothing would happen right ? But what happens if there is loquid transfer? what will be the force exerted at the...
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    High School Pascals Principle: Pressure in Enclosed Fluids Explained

    Oh so you are saying that pressure at same level is the same , but at different levels in the enclosed fluid the ' pressure increases with height' rule still applies?
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    High School Pascals Principle: Pressure in Enclosed Fluids Explained

    I still don't get how they link.
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    High School Pascals Principle: Pressure in Enclosed Fluids Explained

    Can someone explain why pressure is transmitted equally to all parts of an enclosed fluid, as stated in pascals principle ? Why doesn't the 'pressure increases with height' rule play a part ? Is it because the volume of the liquid will always stay the same? But then so what ?
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    Diff between binary digits and memory.

    for dynamic memory to work, either the CPU or the memory controller has to come along and recharge all of the capacitors holding a 1 before they discharge. To do this, the mem*ory controller reads the memory and then writes it right back.(how?!) DRAM works by sending a charge through the...
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    Diff between binary digits and memory.

    CWatters, thanks for the link it's really helpful but the info is too hard for me to understand ...;( Memory is made up of bits arranged in a two-dimensional grid. are bits matter?( i know this sounds stupid but I'm reallly confused.)
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    Diff between binary digits and memory.

    i'm doing a project on electronics while knowing nothing at all about it. after reading up i do have some basic info, but i think i also have quite a bit of misconception. based on internet research ,i know that RAM is created by semiconductors ( please correct me if I'm wrong) and binary...
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    High School Can decreasing acceleration be negative acceleration ?

    Erm but for your first example acc is increasing right ?
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    High School Can decreasing acceleration be negative acceleration ?

    Yeah exactly I agree With you but my teacher insists that I am wrong and claims that decreasing acc cannot be negative acc. Whew ! At least someone has the same thinking as me .
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    High School Can decreasing acceleration be negative acceleration ?

    No deceleration is constant not decreasing acceleration
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    High School Can decreasing acceleration be negative acceleration ?

    Can decreasing acceleration be negative acceleration ?
    • Celluhh
    • Thread
    • Acceleration decreasing Negative
    • Replies: 6
    • Forum: Mechanics
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    Undergrad Is There a Relation Between cos5A and cosA, sin4A and sinA?

    Oh I see yep I'm only at the double angle formulae level ... And having problems with expressing cos4a or others in the form of simple trigo ratio eg. Cosa. Does anyone have any online website to recommend that solves this kind of problems ?
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    Undergrad Is There a Relation Between cos5A and cosA, sin4A and sinA?

    Um wait what is C1 ,C2 etc...
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    Undergrad Is There a Relation Between cos5A and cosA, sin4A and sinA?

    @studiot, no that's not it but it's hard to memorise it and it's not one of the formulas learned in school for Now , so I can't exactly use it in my exam ! Thanks a lot though !