Question 5

Rearrange the following formulae to make the letter shown in the square brackets the subject.

(a) \( V = \pi r^2h\) \( [h]\) (b) \( x = \frac {a + y}{2 - y}\) \( [y]\) (c) \( E = mc^2\) \( [m]\)
(d) \( v = u + at\) \( [a]\) (e) \( V = IR\) \( [I]\) (f) \( n\lambda = 2dsin\theta\) \( [d]\)
(g) \( a = \frac {v - u}{t}\) \( [t]\) (h) \( a(x + d) + \frac{x}{d} = 2(x + 5)\) \( [x]\) (i) \( f = \frac {uv}{u + v}\) \( [v]\)
(j) \( y = \sqrt{a - 2x}\) \( [x]\) (k) \( I = \frac {W}{h^2}\) \( [h]\) (l) \( a(x + 5) - (x + 2) = b(x + c)\) \( [x]\)