Electricity

Question 1

A radioactive source emits alpha particles each with 8.1 × 10–13 J of kinetic energy.
(a) Show that the velocity of an alpha particle with kinetic energy 8.1 × 10–13 J is approximately 2 × 107 m s–1
specific charge of an alpha particle = 4.81 × 107 C kg–

Answer 1

Correctly re-arranged k.e. equation (with v2 or v as subject) with 8.1 × 10–13 (J) substituted correctly1✔
1.56 × 107 seen 2✔