Question

before a thunderstorm on end a hair with mass 0.50 mg and charge 1.0 PC is supported by a force other than the weight of hair and the electric force what is the electric field strength​

Answer 1

Answer:

Before a thunderstorm, the hairs on your head sometimes stand on end.

A hair with mass 0.50 mg and charge 1.0 pC is supported by a force due to an electric field.

Ignore any forces other than the weight of the hair and the electric force.

What is the electric field strength?

A 4.9 × 103 N C-1

B 4.9 × 105 N C-1

C 4.9 × 106 N C-1

D 4.9 × 109 N C-1

Answer 2

Answer:

The electric force is equal to the weight

Electric force=weight

F=mg

Eq=mg

Electric field strength E=mg/q

(mass should be in kg )

E= (0.5×10-6)×9.8(1.0×10-12)

E=4.9x106NC-1