WEBVTT
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So we're doing problem number twenty eight of Chapter five
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chemistry of Central Science to consider a system to absolute
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charge. Spheres hanged by strings and separated by the
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distance are one. You can see this in your
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textbook. Suppose they're separate to a larger distance.
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Are two moving them part. What? Changing potential
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energy if any occurred in your system. So we
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have Remember potential energy is e is equal to K
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. Kyu won. Time's a cute too angel hair
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. No, K k is a constant and cute
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you want and cute. You are also competencies into
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charges of our respective of our respective spheres. Now
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remember, we can. That's as the we have
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one sphere that's possibly charge one spear this negatively charged
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that the is an attractive interaction action. So the
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further we remember Vory remember this graph with E as
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a function of our as we move attract attractive particles
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away from each other, the energies is really going
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to increase, then level off zero. So that
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means as we increase our r r value, we've
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moved him further part. Are the the delta eat
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the energy of our system is going to increase and
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then level and then eventually become zero with me region
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each are eagles infinity. Now this is also going
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to This is going so as our delta guilty he
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is it as our is becoming more positive, it's
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positive and lt is also changing because remember Delta eu
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khun right as e tu minus e one. So
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as we're increasing our e to value so as so
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as we move it apart or eat, need to
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value we can use becomes larger and larger. So
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hee, too is going to be greater than the
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one. So that means that as we move them
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further apart, E one is going to be positive
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. So from our one are two two. That's
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Delta is going to be greater than zero now for
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part C. What can you say about Q and
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W for this process? Well, we can't say
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anything about you were not given any any information about
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the temperature, so Q is unknown and for work
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work. Our work is going to be positive because
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we are holing these attractive interactions apart art. And
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we also know that Delta E is positive. Remember
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, Delta is equal to que plus plus w you
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sew it so we can determine that work is positive
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. That work is being done on our system to
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move these fears apart.