Rice has a bulk of 0.9 g/mL, but an individual grain of rice has a density of 1.1g/mL. Water has a density of 1.0g/mL. what would happen to a cup of rice when poured into a lot of water?

Since the grains are not connected together, it's every grain for himself when they're dropped into the water.

The density of each grain is greater than the density of water, so each grain on its own sinks to the bottom.

The reason why a CUP or a BAG of rice has less density is because the grains don't all fit together perfectly, and 15% or 20% of the volume in the cup or bag is air, not rice grains.

"Rice is the perfect snack, when you're hungry for 2000 of something."

Mitch Hedberg

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.