Ablock of mass 55.1 kg rests on a slope having an angle of elevation of 22.3°. if pushing downhill on the block with a force just exceeding 177 n and parallel to the slope is sufficient to cause the block to start moving, find the coefficient of static friction.

The particles of the gas inside the ball heats up, bouncing off each other and spreading farther apart.hope my answer has you : )

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

C) the periods  of day and night would be fixed all year for anyone at the  equator