Calculating Average & RMS Speed of Molecules

[abrowaqas]

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.

 

[vela]

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.

 

[lightgrav]

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.

 

[abrowaqas]

thanks i got it..