21 POINTS

What Do You Already Know about Density? Material Design. Number each material and sort the items in order from lowest (1) to highest (7) Density.
-Chalk
-Copper
-Flour
-Dry Beans
-Talcum Powder
-Wax
-Wet Sand

The respiratory system removes oxygen and water from the body. select the best answer from the choices provided t f

The coulomb's law explains which of the following? select all the force between two charged objects is inversely proportional to the charge on each object. the force between two charged objects is directly proportional to the charge on each object. the force between two charged objects is directly proportional to the distance separating them. the force between two charged objects is inversely proportional to the square of the distance separat coulomb's law is similar to newton's 2nd law. if the force between two objects is f and the charge on both objects is doubled, the new force between the would now be 2f. if the force between two objects is 2f and the distance separating them is doubled, the new force between the objects would now o the be zf.

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.