If a running system has a total change in the heat of 437 joules, and it is running at a temperature of 321 K, what is the entropy? A. 0.970 joules/kelvin
B. 1.36 joules/kelvin
C. 1.15 joules/kelvin
D. 1.54 joules/kelvin

Which of the following statements are true of solids? a.the particles do not vibrate. b.the particles are in a fixed location. c.they have strong intermolecular forces between the atoms or molecules. d.the particles have less kinetic energy than those of liquids or gases.

Which boundary is associated with the building of the himalaya mountains? convergent transform divergent hot spot

Light from the sun reaches the earth in 8.3 minutes. the velocity is 3.00 x 10^8 m/s. how far is earth from the sun? i know how to get to d = (3 x 10^8 m/s)(498 sec). i just don't know how to get from there to the answer being 1.5 x 10^11 m.