If you took a balloon of gas and then warmed the balloon in a sunny window, what can now be said about the density of the gas in the balloon

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?

Which of the following is not a physical property of mattera. melting pointb. heat of combustionc. viscosityd. boiling point

Gabby calls her cousin who lives in a different state and tells her to turn her radio to channel 98.7 so they can listen to their favorite song that is playing. her cousin turns her radio to 98.7, but does not hear the same song gabby hears. which most likely explains why?