Calculating Average & RMS Speed of Molecules

AI Thread Summary
To calculate the average speed of a group of molecules with speeds ranging from 2 to 11 km/sec, sum the speeds and divide by the number of speeds, which is 10. The root mean square (RMS) speed requires squaring each speed, averaging those squared values, and then taking the square root of that average. The average speed formula is correct as stated. For RMS speed, refer to your textbook for the specific definition and method. Understanding these calculations is essential for analyzing molecular speeds effectively.
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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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