= Paper 2B
{scope}
Original paper: https://www.whatdotheyknow.com/request/physics_past_papers_23/response/3514893/attach/4/FOI%202026%20628%20Smith%20materials.pdf?cookie_passthrough=1#page=273[Public original PDF, physical pages 273–278].
Sections A–C coincide with those in <past exam of the physics b course of the university of cambridge/2010/paper 2a>. Each answer below gives its result and links to the shared derivation, including its assumptions and source qualifications.
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