the question is related k.e. theory of gases:-

consider a sample of 10 molecules with speed distribution as shown:

2 molecules-100m/s

3 molecules-200m/s

4 molecules-300m/s

1 molecule-50m/s

find v_mp amd v_rms?

v_mp is clearly 300 m/s.i used this speed to calc. v_rms and got v_rms=367.4 m/s(using v_rms/v_mp=).

but if one finds answer of v_rms using v_rms=(v₁²+v₂²+v₃²+.........+v_n²)/n the answer comes out to be 224m/s(appx.).

can anyone tell where is the error??????????

Kevin Nash , 11 Years ago

Grade upto college level