A scam artist hopes to make a profit by buying and selling gold at differ-
ent altitudes for the same price per weight.
Should the scam artist buy or sell at the
higher altitude?

What happens to light waves from a star as the star moves away from earth?

Which lists the fundamental forces in order, from strongest to weakest? strong nuclear, weak nuclear, electromagnetic, gravitational strong nuclear, electromagnetic, weak nuclear, gravitational gravitational, weak nuclear, electromagnetic, strong nuclear electromagnetic, gravitational, strong nuclear, weak nuclear

What is special about a dc circuit ?