In Her Physics Laboratory, Mathilda Shines Electromagnetic Radiation on a Material

question 37

Short Answer

In her physics laboratory, Mathilda shines electromagnetic radiation on a material and collects photoelectric data to determine Planck's constant. She measures a stopping potential of 5.82 V for radiation of wavelength 100 nm, and 17.99 V for radiation of wavelength 50.0 nm. (1 eV = 1.60 × 10^-19 J, c = 3.00 × 10⁸ m/s)
(a) Using Mathilda's data, what value does she determine for Planck's constant?
(b) What is the work function of the material Mathilda is using, in electron-volts?

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Definitions:

Industrial Alcohol

Alcohol produced for use in industrial applications, such as solvents, fuel, and raw materials for chemical synthesis, rather than for consumption.

Mutual Interdependence

A situation in a market where the actions of one firm can significantly impact the welfare of another, often seen in oligopolistic markets.

Equilibrium Price

The price at which the quantity of goods supplied matches the quantity of goods demanded, leading to market stability.

Oligopoly

A market structure characterized by a small number of firms whose decisions affect and are affected by each other, leading to strategic behavior.