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Home/ Questions/Calculate the net force that cytosine exerts on guanine
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kttutoria
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kttutoriaExpert
Asked: April 13, 20222022-04-13T03:20:04+00:00 2022-04-13T03:20:04+00:00In: Physics

Calculate the net force that cytosine exerts on guanine

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The figure shows the bonding of the cytosine and guanine molecules. The O – H and H – N distances are each 0.110nm. In this case, assume that the bonding isdue only to the forces along the O – H – O, N – H – N and O – H – N combinations, and assume also that these three combinations are parallel to each other.

Calculate the net force that cytosine exerts on guanine due to the preceding three combinations.

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The force of the electrical force ( F) between two charges ( q1,q2) separated by the distance d is determined by

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k=8.99×109 Nm2/C2

 

net force
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    kttutoria Expert
    2022-04-21T10:16:46+00:00Added an answer on April 21, 2022 at 10:16 am

    Here is my answer

    • First, realize that both the top- and bottom forces cancel each other. If you recall that each atom is assigned a +e/-e, then you can see that they cancel because they are the same length.
    • The only thing you need to be concerned about is the middle one, with a distance of 300nm.
    • The distance between the two bonds N-H is calculated from this. One is 11 and the other is 19.
    • For each bond, you will use F=k (e2)/(r2). K=9 x 109, and e = 1.6 x 10-19. Calculating both correctly will give you 6.38 x 10-9 & 1.9 x 10-8.

    Add the two numbers together and you will get the answer! 1.26 x 10-8!!!! !

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  2. Noah Lee
    2022-04-13T03:20:08+00:00Added an answer on April 13, 2022 at 3:20 am

    It’s mine! First, realize that both the top- and bottom forces cancel each other. If you recall that each atom is assigned a +e/-e, then you can see that they cancel because they are the same length. The only thing you need to be concerned about is the middle one, with a distance of.300nm. The distance between the two bonds N-H is calculated from this. One is ….11 and the other is.19. For each bond, you will use F=k (e2)/(r2). K=9*109, and e = 1.6*10-19. Calculating both correctly will give you 6.38*10-9 & 1.9*10-8. Add the two numbers together and you will get the answer! 1.26*10^-8!!!! !

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