In which system are both energy and matter exchanged with the surroundings? In a(n)
system both energy and matter are exchanged with the surroundings.

Tungsten-filament lightbulb emits light based on the temperature of the filament. which phenomenon does this demonstrate?

Asample of a gaseous substance changes into a liquid

From center station, a train departs every 30 minutes on the fast line and a train departs every 50 minutes on the state line. if two trains depart from center station at 8: 00 a.m., one on each of the two lines, what is the next time that two trains, one on each line, will depart at the same time?