Copper metal has a specific heat of 0.385 J/g *oC . Calculate the amount of heat required to raise the temperature of 22.8 g of Cu from 20°C to 875°C.

Stars are born within the clouds of dust and scattered throughout most galaxies. a familiar example of such as a dust cloud is the orion nebula. turbulence deep within these clouds gives rise to knots with sufficient mass that the gas and dust can begin to collapse under its own gravitational attraction. as the cloud collapses, the material at the center begins to heat up. known as a protostar, it is this hot core at the heart of the collapsing cloud that will one day become a star. three-dimensional computer models of star formation predict that the spinning clouds of collapsing gas and dust may break up into two or three blobs; this would explain why the majority the stars in the milky way are paired or in groups of multiple stars.therefor, i would say the answer is: dust and gases contract.i hope this ! < 3

Well in that case, since an object moves with a constant velocity, there will be no acceleration as it is not increasing in speed.

All i gotta say is ? k12 or usa test prep? and im not going to answer because you probably already finished.