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Question 18N.2.HL.TZ0.6b.ii

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Date November 2018 Marks available [Maximum mark: 2] Reference code 18N.2.HL.TZ0.6b.ii
Level HL Paper 2 Time zone TZ0
Command term Determine Question number b.ii Adapted from N/A
b.ii.
[Maximum mark: 2]
18N.2.HL.TZ0.6b.ii

15 32 P is formed when a nucleus of deuterium ( 1 2 H ) collides with a nucleus of 15 31 P . The radius of a deuterium nucleus is 1.5 fm.

(b.ii)

Determine, in J, the minimum initial kinetic energy that the deuterium nucleus must have in order to produce 15 32 P . Assume that the phosphorus nucleus is stationary throughout the interaction and that only electrostatic forces act.

[2]

Markscheme

energy required = 15 e 2 4 π ε 0 × 5.3 × 10 − 15  ✔

= 6.5 / 6.6 ×10−13 OR 6.3 ×10−13 «J» ✔

 

Allow ecf from (b)(i)

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