If the mass of the disk is 2. 776 kg, what is the mass of either of the objects hanging from the string? show your process here.

George is a dalmatian puppy. describe what happens to light that allows you to see george’s black and white coat.

Although respiratory organs vary across different organisms, they all contain respiratory surfaces that have a large surface area and are extremely thin. explain why having an extremely thin respiratory surface with a large surface area is advantageous for the process of gas exchange

A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?