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    rosetp's Avatar
    rosetp Posts: 1, Reputation: 1
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    #1

    Oct 2, 2010, 06:42 PM
    Physics Homework Help
    Q1/The energy transformation by using electric motor;chemical E transformed to heat E then to kinetic E.2/the energy transformation by using load;electrical E transforned to kinetic E then to GPE.3/the energy transformation by using a dynamo:GPE transformed tokinetic E then to light. v=10.09, I=1.12a,t=2.06s, m=200g inkg=0.2kg,g=10N/kg, h=1m. Q/describe the energy conversions and the efficiency of the transformation process in this experiment?
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Oct 2, 2010, 11:24 PM

    Your question is very unclear. It would be god if you used paragraphing and not clutch everything together; it is really confusing.

    What are these values? What do they represent? Are the same values to be used in every question?

    For instance, what is v? Potential difference of velocity?

    I hope that you know your formulae well.









    You didn't give any information about the energy lost or other relevant energy issues. Without this, you cannot find the efficiency.
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