Do equal volumes of water have equal weights? explan your reasoning.

If the speed of a particle triples ,by what factor does its kinetic energy increase?

Two forces produce equal torques on a door about the door hinge. the first force is applied at the midpoint of the door; the second force is applied at the doorknob. both forces are applied perpendicular to the door. which force has a greater magnitude?

What’s #16 asking and how do i solve it?