The internal energy of a system is always increased bya)adding heat to the system and having the system do work on the surroundings. b)having the system do work on the surroundings. c)withdrawing heat from thesystem. d)adding heat to the system. e)a volume decompression.

Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both

Movement that is like a t a type of wave that transfers energy where the particles in the medium move in a circle motion while the energy travels left or right. a type of wave that transfers energy where the particles in the medium move perpendicular to the direction in which the energy is traveling. transfers energy from one location to another a type of wave that transfers energy where the particles in the medium move parallel to the direction in which the energy is traveling. movement that is back and forth, like an equal sign = 1. wave 2. parallel movement 3. perpendicular movement 4. transverse wave 5. longitudinal wave 6. surface wave

Quickly what are the following of organisms that existed over a wide area but only for a limited time period called a. soft fossils b. mold fossils c. index fossils d. trace fossils