Abook weighs 4 n. when held at rest in your hands, the net force on the book isquestion 9 options:

0 n.

0.4 n.

4 n.

39 n.

none of the above

0n

Explanation:

Net force is all of the forces acting upon which are equal the gravitational force the regular force and you force pulling in both direction that all equal to another subtracted.

electrical potential energy =0.072 j

explanation:

electrical potential energy is given by

u= q δv

q= charge=6 c

δv= potential difference and is given by

δv= e d

e= electric field

d= distance=5 mm=0.005 m

δv=2.4 (0.005)=0.012 v

now electric potential energy= u= q δv

u=6 (0.012)

u=0.072 j