When you hold your nose and go underwater, you can still hear sounds that are made above the water, in the air, if they are loud enough. this is because the in the air get transferred to the water.?

How much energy is made when a pice of wood burns. how do you know

Suppose that some of the compound spilled out of the crucible after it was heated. would that cause the percent by mass of water in the compound determined by the experiment to be too low, too high, or unchanged? briefly explain your answer.

Arectangle has a diagonal 20 inches long that forms angles of 60 and 30 with the sides. find the perimeter of the rectangle. for geometry