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Question 19N.3.HL.TZ0.a(i)

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Date November 2019 Marks available [Maximum mark: 1] Reference code 19N.3.HL.TZ0.a(i)
Level HL Paper 3 Time zone TZ0
Command term Calculate Question number a(i) Adapted from N/A
a(i).
[Maximum mark: 1]
19N.3.HL.TZ0.a(i)

A Σ+ particle decays from rest into a neutron and another particle X according to the reaction

Σ+ → n + X

The following data are available.

Rest mass of Σ+             = 1190 MeV c–2
Momentum of neutron    = 185 MeV c–1

Calculate, for the neutron,

the total energy.

[1]

Markscheme

neutron energy =1852+9402=958 «MeV» ✔

NOTE: Allow 1.5 × 10–10 «J»