Which of the following would cause the hot air balloon to rise? A. Increase the lift and weight equally B. Decrease the lift and the weight equally
C. Decrease the lift and increase the weight
D. Increase the lift and decrease the weight

D (i believe)

Explanation:

When the heated air causes the hot air balloon to lift, it decreases the weight. ( think so, my dad explained kinda hard.)

altitude, density, pressure

air gets less dense the higher the altitude and also the air pressure is less as altitude rises.

vanderwaal's forces of attraction are the electrostatic intermolecular forces that exist in a molecule due to the temporary or permanent dipoles that are developed in a molecule. in , the major intermolecular forces are dipole-dipole interactions as the molecule is polar (bent structure). so the vanderwaal's forces of interaction in between molecules are the permanent dipole-dipole interactions that develop due to the dipole that exists in between the polar h - s bond. the positively charged hydrogen atom is attracted towards the negative end of the dipole that is sulfur of the adjacent molecule. therefore, these forces of attraction are relatively stronger than that of london dispersion forces that exist in non polar molecules.