The Drag Force on a Plane Is Proportional to the Density

question 48

Multiple Choice

The drag force on a plane is proportional to the density of the air. By what factor does the drag force change if a plane goes from an altitude 5.5 km to 11 km? The atmospheric pressure goes from to atm in going from 5.5 km to 11 km. Assume that the plane is at level flight and flies at the same speed.

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Definitions:

Magnesium Oxide

A white hygroscopic solid mineral used as an antacid and mild laxative, and in numerous industrial applications.

Balanced Chemical Equation

An equation that represents a chemical reaction with equal numbers of atoms for each element in both reactants and products.

Reduction

A chemical process involving the gain of electrons or the decrease in oxidation state by a molecule, atom, or ion.

Oxidation Number

A measure of the degree of oxidation of an atom in a substance, indicating the number of electrons lost or gained by an atom.