Recent content by Omar FTM

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    Potential difference between points d and c in circuit

    But my steps are right , are not they ? I will do it using less rounding this time.
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    Finding emf1, R1 & R2 from a graph

    Where i=0 , E2(2nd battery) = 40v , E2(1st battery) = 60v. ( what is the equation to turn the E2(1st battery) to E1 of the first battery ) ? I calculated 1\R using If-Ii\Vf-Vi from the plots , R is V\I ( the inverse ).
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    Potential difference between points d and c in circuit

    The current flow as mentioned is upward on R2. I tried puting -0.3 v and 0.3v , both were wrong. There are only two batteries and 3 resistors.
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    Finding emf1, R1 & R2 from a graph

    Homework Statement Both batteries in Figure (a) are ideal. Emf 1 of battery 1 has a fixed value, but emf 2 of battery 2 can be varied between 10.0 V and 100.0 V. The plots in Figure (b) give the currents through the two batteries as a function of 2. The vertical scale is set by is = 0.48 A. You...
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    Potential difference between points d and c in circuit

    Homework Statement In the figure below, what is the potential difference Vd - Vc between points d and c if E1(of 1st battery) = 4.7 V, E2((of 2nd battery) = 1.4 V, R1 = R2 = 11 Ω, and R3 = 6.7 Ω, and the batteries are ideal? http://farm6.static.flickr.com/5053/5469093809_53c7fe57f4.jpg...
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    Finding the drift speed of a conduction electrons

    Tried answering using V as mV instead of micro V , still wrong :(
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    Finding the drift speed of a conduction electrons

    I get your point , but this is how the question is :D I think that I won't be able to solve it ...
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    Finding the drift speed of a conduction electrons

    Any one ? :)
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    Finding the drift speed of a conduction electrons

    I double checked my p and n , they are correct ( from the book (copper = 1.72e-8 ) , n from the question itself = 8.49x10^28 ) , but it's still telling me that my answer is wrong :(
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    Finding the drift speed of a conduction electrons

    Homework Statement The figure shows wire section 1 of diameter 4R and wire section 2 of diameter 2R, connected by a tapered section. The wire is copper and carries a current. Assume that the current is uniformly distributed across any cross-sectional area through the wire's width. The electric...
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    Charges of three long charged cylinders centered on 1 axis

    I got a) impossible , b)qB= -3q0, qC= +3q0 c) qB= +3q0, qC= -6q0 > They are right. :)
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    Charges of three long charged cylinders centered on 1 axis

    The figure shows a section of three long charged cylinders centered on the same axis. Central cylinder A has a uniform charge qA= +3q0. What are the charges of qb and qc if E is 0 on point > a) 1 ( between A & B ) b) 2 ( between B & C ) c) 3 ( out side the cylinders ) My solutions were based on...
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    Need Help with Civil Engineering Questions? Check Out Our Homework Help Forum!

    I'm a civil engineering student who is looking for some solutions with explanation to multiple questions. I will show my solutions and ask for guidance :)