Physics Urgent please help

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In addition to the Mg nucleus at x = 3 cm, another 3e charge is situated on the y-axis,3cm away from the origin in the +y direction.What is the magnitude of the Electric Field halfway between the Magnesium nucleus and the 3e charge on the y axis in N/C ?

  • Physics Urgent please help -

    the E field from the +2e charge, and the -3e charge are in the same direction (colinear).

    halfway between is the point (1.5,1.5)

    distance to either charge will be

    distance=(1.5^2+1.5^2)=1.5 sqrt 2 check that.

    E=kq/r^2+kq/r^2= k/2.25*2 * (2e+3e)

    put in k, and e as a positive number, and you have it.

    2e represents the Mg nuceus.

  • Physics Urgent please help -

    Mangnesium nucleus is not 12e? is it 2e?

  • Physics Urgent please help -

    Distance between charges is d=sqrt{3²+3²} =4.24 cm
    x=d/2 =4.24/2 =2.12 cm =0.0212 m
    E=kq₁/x²-kq₂/x² =
    =k12e/x²+k3e/x²=k9e/x²=
    =9•10⁹•15•1.6•10⁻¹⁹/0.0212²=
    =4.8•10⁻⁵ N/C try this !!!

  • Physics Urgent please help -

    any hint how i can solve this
    What is the magnitude of the net electrostatic force a Boron nucleus would experience at the point halfway between the Magnesium nucleus and the 3e charge on the y axis in N? ???

  • Physics Urgent please help -

    I did this but I got wrong and now I am out of attempt. I already got 4 question wrong. I have two question remained 6 and 7 (spring one and other angle one). Can you help to solve these two?

  • Physics Urgent please help -

    hai asha for 7) tan(theta)=(E*q)/(m*g) and i not yet done for 6 question if u got correct ans help me ???

    also for 5 question if u got it correct help me ????

    7)tan(theta)=(E*q)/(m*g)
    6)??
    5)??

  • Physics Urgent please help -

    Hi, rickross I did 5, but I got wrong . I just multiply boron nucleus by electron, but it is wrong and now I am out of attempt. Thank you very much for your help. I am not doing 6 still. I don't know even how to start..I know due date is coming soon. I am still not getting 6o% too, but I have attempt remaing only in 6, all other are out of attempt and mostly got wrong...:(

  • Physics Urgent please help -

    6 question answer is:

    h-(2*ke*lambda*q)/(l*ks)

  • Physics Urgent please help -

    4 question, I got wrong.

    I calucalte three points, 3e in origin, 3e in y -axis , 12e at 3cm in X-axis. is it wrong?
    We just need 3e in Y-axis and Mg nucleur?? sorry for my comprehension of english, I'm not native speak.

  • Physics Urgent please help -

    4th question answer need.
    What is the magnitude of the Electric Field halfway between the Magnesium nucleus and the 3e charge on the y axis in N/C?

  • Physics Urgent please help -

    hai Unrickross 4th question ans is
    Distance between charges is d=sqrt{3²+3²} =4.24 cm
    x=d/2 =4.24/2 =2.12 cm =0.0212 m
    E=kq₁/x²-kq₂/x² =
    =k12e/x²+k3e/x²=k9e/x²=
    =9•10⁹•15•1.6•10⁻¹⁹/0.0212²=
    =4.8•10⁻⁵ N/C try this !!!

  • Physics Urgent please help -

    hai Unrickross !!! i need ans for 5th question ???
    5??

  • Physics Urgent please help -

    rickross, 4th answer is correct? I don't have any opportinutes to try again.
    5th question, I think using 5e mulitplex 4th answer must correct.

  • Physics Urgent please help -

    Hi rickross, 4th question calculation, why don't consider origin 3e charge in equation??

  • Physics Urgent please help -

    unrickross ! first tell me if u got green check on that 4th question better i have to explain !!!
    so what about 5th question ???

  • Physics Urgent please help -

    rickross, I use your answer of 4th, 4.8*10^5, I multiplex 5*1.6*10^-19, I got a green check. (3.84*10^23).
    I read your caluation routie of 4th question, why K(12e+3e)/(r^2) is correct? If 3e charge were negative electron, the equation would correct, but i think 3e charge is positive, so equation is K(12e-3e)/(r^2), rickross please explain a little. Thank you!

  • Physics Urgent please help -

    Distance between charges is d=sqrt{32+32} =4.24 cm
    x=d/2 =4.24/2 =2.12 cm =0.0212 m
    E=kq₁/x2-kq₂/x2 =
    =k12e/x2-k3e/x2=k9e/x2=
    =9�10⁹�9�1.6�10⁻1⁹/0.02122=
    =2.9�10⁻⁵ N/C

    why this answer is wrong?

  • Physics Urgent please help -

    jasonhafner
    4 days ago
    As stated in the first lecture, "e" is the elementary charge unit,and never means the electron charge.

    Professor's explaination confuse the 4th answer.

  • Physics Urgent please help -

    rickross in your equation k12e/x�+k3e/x�=k9e/x�
    but why you using K15e/x in final calculation?

  • Physics Urgent please help -

    3.84*10^-23, sorry type wrong sign

  • Physics Urgent please help -

    what are the answers for q13-16?

  • Physics Urgent please help -

    Oh God unrickross i made mistake on my sign but the last ans is correct
    so it would be

    Distance between charges is d=sqrt{3²+3²} =4.24 cm
    x=d/2 =4.24/2 =2.12 cm =0.0212 m
    E=kq₁/x²+kq₂/x² =
    =k12e/x²+k3e/x²=k15e/x²=
    =9•10⁹•15•1.6•10⁻¹⁹/0.0212²=
    =4.8•10⁻⁵ N/C try this !!!

  • Physics Urgent please help -

    hai unrickross THX foR 5QUESTION I got green check !!!

  • Physics Urgent please help -

    hi Rickross, explain why 15e ?

  • Physics Urgent please help -

    3e and 12e charge have opposite force, so I conside 9e instead of 15e, why answer is 15e?????
    Answer is not correct , I think!

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