Paper 1 (source code)

= Paper 1
{scope}
{title2=RELATIVITY}
{title2=Experimental and Theoretical Physics (2)}
{title2=Physical Sciences: Half Subject Physics (2)}
{title2=2 June 2012}

Original source: https://www.whatdotheyknow.com/request/natural_science_tripos_physics_e_2/response/2340776/attach/2/FOI%202023%20399%20Zahid%20materials.pdf?cookie_passthrough=1[physical PDF pages 203–206; paper pages 1–4]. All three optional notes and both longer alternatives are answered below. The <metric signature> is $+---$; Question 3 uses $c=1$.