Which of the following must be true about an object for it to be in uniform circular motion? a. it must have zero centripetal acceleration. b, it must have increasing centripetal acceleration. c. it must be moving at a constant speed. d. it must be moving with a constant velocity.

The simplest case of circular motion is uniform circular motion, where an object travels a circular path at a constant speed.

I'm pretty sure the answer is C.

the arctic is a region of the planet, north of the arctic circle, and includes the arctic ocean, greenland, baffin island, other smaller northern islands, and the far northern parts of europe, russia (siberia), alaska and canada.

graph slopes whilst gas cools, then it is flat whilst conensation to liquid happens, the coolong liquid then graphs as a slope when it solidifies graph is flat

latent heat