Final answer:
The critical temperature for frost damage at 28.0°F converts to approximately 268.15 Kelvin using the formula K = (F - 32) x 5/9 + 273.15.
Step-by-step explanation:
The question asks for the critical temperature for frost damage on the Kelvin scale, specifically at 28.0°F or lower.
To convert temperatures from Fahrenheit to Kelvin, we can use the formula: K = (F - 32) × 5/9 + 273.15.
Using this formula, the critical temperature for frost damage in Kelvin is approximately 268.15K (28.0°F - 32) x 5/9 + 273.15.