A hot-air balloon has a volume of 440 × 10^3 ^3. Calculate the buoyant force that the surrounding cold air exerts on the balloon? Given that the density of the surrounding air is 2.58 kg/^3.

A hot air balloon has a volume of 2.2 times 10^3 m^3. What is the buoyant force that the surrounding cold air exerts on the balloon? Assume that the density of the surrounding air is 1.29 kg/m^3 (a) 2.79 times 10^2 N (b) 2.79 times 10^3 N (c) 2.79 times 10^4 N (d) 2.79 times 10^5 N When water flows vertically downward out of the cross sectional area of the stream of water gradually narrows This phenomenon can be explained .

with the invention of the automobile, the woman of the house could drive to the store and get groceries. women were also free to socialize more. during world war ii women were allowed to work in factories to the war effort and could drive to work or ride mass transit buses to their jobs.