A graduated cylinder contains water to the 15-cm'level. A stone was placed in the water, which rose to the 21-cm level. Then a cork stopper, with the same stone resting
on it so as to hold both submerged, was placed in the water. The water rose to the 26-
cmº level. What was the volume of the cork stopper, in cm"?
11
6
26
5
21

when heated, the valance electrons increased their speed and transferred the heat from electron to electron.   i just took the test.

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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