A train leaves the station heading north on the tracks. It takes 6 setons to reach 60 miles per hour. It completes the entire 60 mile trip in one hour. Calculate the trains average speed and velocity over the one hour trip.

Because air contracts as it cools, the air pressure inside a freezer is typically lower than on the outside. why do ice cubes inside a freezer tend to shrink over time? a. the ice dissolves oxygen from the air, forming a denser crystalline matrix.b. the ice reacts chemically with carbon dioxide in the air, forming gaseous carbon compounds.c. the ice melts, and then the liquid freezes as ice crystals on the bottom of the freezer.d. the ice sublimes, and then the water vapor deposits as ice crystals on the sides of the freezer.

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

Apersons beliefs and general outlook, which act like filters on the information they receive are called ?