At any given moment do scientists have an idea of how much water is in the atmosphere? Can we compare it to how much fresh water is stored on Earth as a liquid?
Okay, I need help on a lot questions. I most of the math parts, but this stuff just completely confuses me. Any help will be greatly appreciated. Please help me not fail my class.
Work/Energy
Two identical arrows, one with twice the speed of the other, are fired into a bale of hay. Assuming...