What is the purpose of the component represented by the symbol

it should be -8.6 cm hope this out

it becomes positively charged by charging it

a) electrical > light, sound, and thermal< < < <

) the mechanical energy of the firefighter moving.< < < < a) electrical > light, sound, and thermal< < < <

c) both a and b.

no. dot product   =0 when vecs at right angles