Why humans are not perfect when it comes to intellectualism!!

Which type of basaltic lava flow has a fairly smooth

Give one example to show that when substances are mixed, it may result in a chemical or a physical change depending on the conditions.

What pressure difference is required between the ends of a 2.0-m-long, 1.0-mm-diameter horizontal tube for 40 c water to flow through it at an average speed of 4.0 m/s?