30four boxes of increasing size and weight must be pushed up a ramp. to push the boxes at the same speed, what must you do? a) push the boxes with the same force, smoothly up the ramp.. b) the larger and heavier the box, the more force you must use when pushing. c) push the boxes with the same force, at exactly the same speed, up the ramp. d) push the largest box with the most force; push the others with about the same force.

The larger and heavier the box, the more force you must use when pushing.

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.