10 U/ev 6. 2. -2 -4 -6 -8 -10 3. 5n 6. 7 8 Figure 4 (i) What is the minimum potential energy in joules? (ii) With reference to the graph, explain the expansion of solids (iii) Determine slopes at the points where the r values are 11 nm, 38 nm and 67 nm. (iv) Plot a graph of slopes above against r, estimate the energy needed to separate the atoms completely. (b) Explain how electromotive force is different from potential difference.
10 U/ev 6. 2. -2 -4 -6 -8 -10 3. 5n 6. 7 8 Figure 4 (i) What is the minimum potential energy in joules? (ii) With reference to the graph, explain the expansion of solids (iii) Determine slopes at the points where the r values are 11 nm, 38 nm and 67 nm. (iv) Plot a graph of slopes above against r, estimate the energy needed to separate the atoms completely. (b) Explain how electromotive force is different from potential difference.
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Transcribed Image Text:7) (a) Figure 4 below shows how the potential, U, between two neutral atoms varies with
their distance apart.
Transcribed Image Text:10
U/ev
4
2
-2
-4
-8
-10
1
5 6
7 8
2
Figure 4
(i) What is the minimum potential energy in joules?
(ii) With reference to the graph, explain the expansion of solids
(iii) Determine slopes at the points where the r values are 11 nm, 38 nm and 67 nm.
(iv) Plot a graph of slopes above against r, estimate the energy needed to separate the atoms
completely.
(b) Explain how electromotive force is different from potential difference.
00
6)
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