What was a positive result of the industrial revolution? * A. agricultural productivity increased B. medical care improved C. sanitation improved D. all of the above

Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?

Ajet plane is speeding down the runway during takeoff. air resistance is not negligible. identify the forces on the jet.

What atom has the largest atomic radius