Units of time are based on earths motion relative to other celestial object. The year is best defined as earths motion relative to the ?

Awater molecule is polar because there is an uneven distribution of these between the oxygen and hydrogen atoms.

Imagine ? person stepping on a pin and pulling his or her foot way look at the réfléchir arc of the scenarios below

If water is at -10 ° c and energy is added to the water until it is 50 ° c while maintaining a constant pressure of 760 mmhg, describe the phase change of the water?