Aseries circuit is shown in the diagram below. what is
the potential drop across r7? (r1 = 20 12, r2 = 40 12, r3
= 60 2, v = 60 v) (ohm's law: v = ir)

Chameleons catch insects with their tongues, which they can rapidly extend to great lengths. in a typical strike, the chameleon's tongue accelerates at a remarkable 220 m/s2 for 20 ms, then travels at constant speed for another 30 ms.