What is the direction of the magnetic field due to the positive charge at the location of the negative charge

In a system, when potential energy decreases, then entropy also decreases. true false

Sound is a disturbance that travels through a medium as a

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.