What is the ratio of velocity of sound in hydrogen `(gamma=7//5)` to that in helium `(gamma=5//3)` at the same temperature?

Explanation

To find the ratio of the velocity of sound in hydrogen to that in helium at the same temperature, we can use the formula for the speed of sound in an ideal gas:

\[ V = \sqrt{\frac{\gamma RT}{M}} \]

where:
- \( V \) is the speed of sound,
- \( \gamma \) is the adiabatic index (ratio of specific heats),
- \( R \) is the universal gas constant,
...