Asap plz. true or false: when placing a fulcrum in a lever, to get the greatest mechanical advantage, you would need to make the length of the effort arm greater than the length of the load arm. why?

be sure of your answer

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.

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.

By what factor does the drag force on a car increase as it goes from 65 to 110 km/h?