If a 10-volt battery is placed across a 2-ohm resistance (r = 2ω), a current of amperes will flow.

The air that we breath is made mostly of which gaseous molecule

Ways that industry and agriculture use physical properties to separate substances

Why is rain likely when warm, moisture-laden air meets cold air? a) the lighter warm air will rise and cool down, causing condensation and rain. b) the cold air moves faster and pushes the warm air away, causing condensation and rain. c) the moisture in the warm air condenses on contact with the cold air, causing rain to fall. d) the cold air mixes with the warm air, reducing its temperature causing moisture to condense.