The velocities of three molecules are 3v, 4v and 5v. Calculate their root mean square velocity.

Explanation

To calculate the root mean square (RMS) velocity of the three molecules with velocities 3v, 4v, and 5v, we can follow these steps:

### Step 1: Write down the formula for root mean square velocity
The formula for the root mean square velocity (u_rms) for a system of n molecules is given by:

\[ u_{rms} = \sqrt{\frac{V_1^2 + V_2^2 + V_3^2 + ... + V_n^2}{n}} \]
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