Potential Energy Function Given E sub-t

AI Thread Summary
The discussion revolves around calculating the potential energy, kinetic energy, and force acting on a lighter atom in relation to a larger atom at rest. The user is uncertain about estimating potential energy from a graph versus calculating the slope and seeks guidance on determining kinetic energy. They believe the force direction is towards the stationary atom but require assistance to proceed with their calculations. The user expresses frustration over the lack of responses to their request for help. Overall, the thread highlights the challenges faced in understanding the relationship between energy and force in atomic interactions.
JWDavid
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Homework Statement


two atoms - larger (M) at rest smaller (m) at a straight line distance r where m < < M. Figure shows U(r) for various positions of the lighter atom.<p>
1. . \
. . . | E1 --------<br>
0 - . \<br>
. . . . \ . . . . . . . ____<br>
-1. . . . \ E2--_/----<br>
. . . . . . \_ _/<br>
--.1 -- .2 --- .3 <p>
For E1 = 1.0 x 10-19J and r = 0.30 (crosses E2 line) find the potential energy, the kenetic energy, and the force (magnitude and direction) acting on the atom.<p>
U(r) is verticle at 10-19J<p>
R in nm is horizontal

Homework Equations


F = -dU/Dr<p>
KE = mV2/2<p>


The Attempt at a Solution


There were two other questions with this to describe the motion at ET >0 and <0, but I'm pretty sure I got them.
Also I'm pretty sure the force (direction) is towards the atom at rest, but I'm not sure what to do to get KE, and should I estimate the value of the potential energy from my graph which is better, or estimate the slope. I just need a nudge in the right direction to get going on this.<p>
Thanks in advance
 
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Is NO ONE able to provide help with this?!?
 

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