Recent content by bennyngreal

  1. B

    Minimum Work Input/Power Required to Freeze 50kg Water & Heat a House

    May u write the procedure, thank you. If u are busy, it is not matter
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    Minimum Work Input/Power Required to Freeze 50kg Water & Heat a House

    no ideas...oh my god
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    Minimum Work Input/Power Required to Freeze 50kg Water & Heat a House

    no.2 i still cannot prove the answer correct. I have used your calculation which is also my content of recent learning. But, I cannot do anything...
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    Minimum Work Input/Power Required to Freeze 50kg Water & Heat a House

    yes. This is my assignment needed to submit tomorrow. Please thanks
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    Minimum Work Input/Power Required to Freeze 50kg Water & Heat a House

    about question1, I do not know the method. I have tried many times but the ans is not matched.
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    Minimum Work Input/Power Required to Freeze 50kg Water & Heat a House

    50kg of water at 0ºC have to be frozen into ice in a refrigerator. The room temp. is 20ºC. What is the minimum work input to the refrigerator to achieve this? (latent heat of fusion of water=3.33x10^5J/kg) ans:1.22x10^6J It is proposed to heat a house using a heat pump operating between the...
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    Calculate Electric Field E at Point (0,0,h) & Maximum Value at h=b/2^1/2

    the method how to do it
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    Calculate Electric Field E at Point (0,0,h) & Maximum Value at h=b/2^1/2

    [SIZE="5"]A line charge of uniform charge density lambda forms a circle of radius b that lies in the x-y plane with its centre at the origin. a)Find the electric field E at the point (0,0,h). b)At what value of h will E in parta) be a maximum?What is this maximum? ans...
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    E Field at Point P w/ Line Charge & Closed Surface

    are u student or the helper?Nice to meet u
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    Help.Mayday.about electricity and magnetism

    I cannot answer the questions correctly.I try all my best.Firstly, the teacher said this is not a infinite line charge in the 1st question,instead it is a point charge.So, the Gauss's law is not appropriate. I use the Coulomb's law.But...I skill don't know how to do it.
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    Help.Mayday.about electricity and magnetism

  12. B

    E Field at Point P w/ Line Charge & Closed Surface

    1.In the diagram below, find the E field at point P.What is E when L is infinity 2.A closed surface is made up of three surfaces,S1 being circular , S2 being cylindrical, and S3 being conical.A line charge of length L and density (D) is placed symmetrically with respect to S2 as shown.If the...