Two point-like charged objects are released at rest in otherwise empty space. As time goes on, the magnitude of the electrostatic force exerted on each of the objects decreases. Which of the following must be true?
(A) Both particles are negatively charged
(B) Not enough info
(C) The particles may be either both positively charged or both negatively charged
(D) One particle is positively charged and the other is negatively charged
(E) Both particles are positively charged

spare some change and give it to the poor

explanation:

plz : ((

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.

i think the answer is tomato juice? not entirely sure though

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it