Now, set the mass of both balls to be equal. Increase the distance between them by pulling one of the balls away from the other. To pull a ball away, click on the ball and drag it. What happens to the force arrows between the two balls? What does this mean in terms of gravity?

put the answers   and i could answer.

answer: e.   sour taste

explanation: acids are those substances which dissociates in water to give ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. acids are sour in taste. example: hcl

bases are those substances which dissociates in water to give ions or accepts ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. bases are bitter in taste. bases are slippery in nature.