A Woman Runs Up a Flight of Stairs

question 7

Multiple Choice

A woman runs up a flight of stairs. The gain in her gravitational potential energy is U. If she runs up the same stairs with twice the speed, what is her gain in potential energy?

• A) U
• B) 2U
• C) U
• D) 4U
• E) U

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Definitions:

ΔG°

The standard change in Gibbs free energy associated with a chemical reaction at standard conditions, indicative of the reaction's spontaneity.

Transformation

In chemistry, it refers to a change in the chemical structure of a molecule through a chemical reaction.

Equilibrium

A state in a chemical reaction where the rates of the forward and reverse reactions are equal, leading to stable concentrations of reactants and products.

Concentration

Concentration refers to the amount of a substance per defined space; it is a measure of how much of a solute is dissolved in a specific amount of solvent.