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Get Full Access to University Physics, Volume 3 - 17 Edition - Chapter 6 - Problem 11
Get Full Access to University Physics, Volume 3 - 17 Edition - Chapter 6 - Problem 11

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ISBN: 9781938168185 2032

## Solution for problem 11 Chapter 6

University Physics, Volume 3 | 17th Edition

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Problem 11

Photoelectric Effect

Explain how you can determine the work function from a plot of the stopping potential versus the frequency of the incident radiation in a photoelectric effect experiment. Can you determine the value of Planck’s constant from this plot?

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Molecules bumping into each other creates pressure Molecules at a faster speed increase the temperature An increase in temperature increases the pressure which causes expansion because they are hitting the walls more frequently and with more force • 12.1 The atomic model of matter Phases ‣ Gas: system in which each particle moves freely through space until it collides with another particle or wall of its container ‣ Liquid: weak bonds permit motion while keeping the particles close together ‣ Solid: deﬁnite shape and can be compressed or deformed only slightly Atomic Mass and Atomic Mass Number ‣ Atomic mass number: sum of the protons and neutrons in the nucleus ‣ Molecular Mass: sum of the atomic masses of the atoms that form the molecule Deﬁnition of the Mole ‣ • Called Avogadro's number ‣ Molar mass: ‣ • Ex. 100g of oxygen and has molar mass of 32g/mol. How many moles are there Volume ‣ Characteristic of a macroscopic system • 12.2 The atomic model of an ideal gas Gases are compressible because their particles are so spread out whereas in liquids and solids, the particles are either fairly close to each other or are in direct contact Temperature of an ideal gas is directly proportional to the average kinetic energy per atom ‣ ‣ ‣ ‣ ‣ Thermal energy is proportional to change in temperature

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