An aircraft traveling at 600km/h accelerates steadily at 10km/h per second. taking the speed of sound as 1100km/h at the aircraft altitude, how long will it take to reach the sound barrier?

Ineed with these 2 questions. you.

Blank liquids and gases exert a buoyant force on objects placed in them

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.