Final answer:
The wall penetration level of the Odin depends on the radiation's ability to pass through a wall or barrier. Ultrasound penetration depth is determined by its wavelength and additional data is needed to calculate it in 0°C air.
Step-by-step explanation:
The wall penetration level of the Odin refers to the ability of radiation to pass through a wall or barrier without being significantly absorbed or scattered. The greater the penetration power, the more material the radiation can pass through and the more dangerous it is. In general, the greater the ionizing power of radiation, the lower its penetration power. For ultrasound, its effective penetration depth is determined by its wavelength. A longer wavelength implies greater penetration depth. To determine the wavelength of ultrasound in 0°C air, additional data is needed.