A calorimeter contains 251 g of water at 24.3°C. The temperature of the water decreases to 18.5°C when 12.5 g of potassium nitrate is dissolved in the water.

Question in picture:

The density of water is 1 g/cm cubed and in order for the pebble to sink its density has to be greater than the density of water and in order for the twig to float its density has to be less than the density of water

12 is probably the typical age for a first kiss but i think its to young.

Ijust took the quiz. their is no coefficient needed. : )

The answer is falsegravitational force is independent of medium and depends only on the masses of the two objects and the distance between them.