One consequence of newton's third law of motion is that
a. every object that has mass has inertia
b. a force acting upon an object increases that objects acceleration
c. all actions have equal and opposite reactions
d. none of the above

One consequence of Newton's third law of motion is that all actions have equal and opposite reactions. The answer is letter C. An example is the boat floating on water. The boat is exerting force to the water and the water is exerting force to the boat.

C. all actions have equal and opposite reactions

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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