Calculating Average & RMS Speed of Molecules

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Homework Help Overview

The discussion revolves around calculating the average speed and root mean square (RMS) speed of a group of molecules with given speeds ranging from 2 to 11 km/sec.

Discussion Character

  • Exploratory, Conceptual clarification

Approaches and Questions Raised

  • Participants discuss the method for calculating the average speed through summation and division, while also seeking clarification on how to compute the RMS speed.

Discussion Status

Some participants have provided guidance on the definitions and methods for calculating the average and RMS speeds, while others have confirmed understanding of the concepts involved. There is an ongoing exploration of the definitions and calculations required.

Contextual Notes

Participants are working within the constraints of a homework assignment, which may limit the depth of discussion and exploration of the concepts.

abrowaqas
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Homework Statement


The speed of a group of molecules are 2, 3 , ... 11 km/sec. find the average speed of the group and also find the R.M>S speed of the group ?


Homework Equations





The Attempt at a Solution


by summation of all 2+3+4+... 11 / 11 . is it right ... and how i find RMS speed.
 
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abrowaqas said:

Homework Statement


The speed of a group of molecules are 2, 3 , ... 11 km/sec. find the average speed of the group and also find the R.M>S speed of the group ?


Homework Equations





The Attempt at a Solution


by summation of all 2+3+4+... 11 / 11 . is it right ... and how i find RMS speed.
Yes, that will give you the average speed of the molecules.

Start by looking up the definition of the RMS speed in your textbook.
 
r.m.s. is abbreviation for "root mean square", which means square root of the average for the "squared speeds". just square them all, find the average, and take the sqrt.
 
thanks i got it..
 

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