The truck travels for 1.5 hours as it makes the 90 mile trip from the warehouse to the store. What was the average speed in miles per hour of the truck while driving to deliver the product to the waiting customers?

explanation:

earth's surface is mainly heated by the absorption of infrared radiation from the sun.

evaporation occurs because molecules in liquid water are warmed ( usually by the sun) and vibrate quicker, becoming less dense and rise.

condensation occurs because molecules in water vapor are cooled and therefore vibrate more slowly thus becoming more dense and eventually fall to earth.

lines of equal barometric pressure on a weather map are called: isobars : lines of equal temp on a weather map are called: isotherms.​

this is poiselle's equation from fluid mechanic in physics. mech eng