Organisms can either be made of one cell or made of more than one cell

This question is about electrolysis. metal spoons can be coated with silver. this is called electroplating. suggest one reason why spoons are electroplated?

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

The volume of helium in a blimp is 6.28 x 10^9 millimeters. the density of helium in the blimp is .1786 kilogram/meter^3. find the mass of the helium in the blimp.