In chemistry class, you are given 3 liquids: liquid a, liquid b, and liquid c. they are each in their own beaker. one of these liquids is water which has a denisty of 1.0 g/ml. you also have an ice cube with a density of 0.92 g/ml, and a piece of cork with a density of 0.85 g/ml when all 3 liquids are mixed together, liquid b is on the bottom. the ice cube will float in b and sink in the other two liquids. a piece of cork will float in liquid a but sink in liquid c. what is the approximate density of liquid a?
a. less than 0.85 g/ml
b. between 0.92 g/ml and 1.0 g/ml
c. greater than 1.0 g/ml
d. between 0.85 g/ml and 0.92 g/ml

D. Between .85 and .92 g/mL.

Explanation:

In liquid A, ice sinks that means its density is less than that of ice or less than .92 g/mL. But in liquid A , piece of cork floats , that means its density is more than that of cork or .85 g/mL. Therefore we can say that liquid A has density in between .92 and .85 g/mL.

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.

3. dark matter

empty space could also be a simple vacuum