The presenter in the video assumes that the container holding the incompressible liquid is in a vacuum. How would the speed of the liquid exiting the hole change if the container is in air (i. e., both the liquid surface and the hole in the container are exposed to the ambient atmosphere)

the temperature in kelvin of 2.0 dm3 of an ideal gas is doubled and its pressure is increased by a factor of four. what is the final volume of the gas

the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form