(a)[2]
On the axes in Fig. 2.1, sketch how the gravitational field strength produced by a point mass changes with distance from the mass.
(b)[2]
On the axes in Fig. 2.2, sketch how the magnitude of the force on a charged particle moving at right-angles to a uniform magnetic field varies with speed.
(c)[3]
On the axes in Fig. 2.3, sketch how the power dissipated in a resistor by a sinusoidal alternating current changes with time over two cycles of the current.