Question

Frost damage to most plants occurs at temperatures of 28.0ºF or lower. What is this temperature on the Kelvin scale?

a) (260.0 K)
b) (269.0 K)
c) (271.0 K)
d) (272.0 K)

Answer 1

To convert 28.0°F to the Kelvin scale, you first convert it to Celsius and then add 273.15. The temperature 28.0°F is equivalent to approximately 271.0 K on the Kelvin scale.

Step-by-step explanation:

To convert a temperature from Fahrenheit to Kelvin scale, you first need to convert it to Celsius and then add 273.15 to get the Kelvin temperature. Starting with the temperature of frost damage to plants, which is 28.0°F, you convert it to Celsius using the formula: C = (F - 32) × 5/9. Then, convert the result to Kelvin by adding 273.15.

Here's the calculation:

C = (28.0 - 32) × 5/9

C = (-4.0) × 5/9

C = -2.222°C

Then convert Celsius to Kelvin:

K = C + 273.15

K = -2.222 + 273.15

K = 270.928 K

When rounded to the nearest whole number, the temperature on the Kelvin scale that causes frost damage to most plants is approximately 271.0 K. Therefore, the correct answer is c) (271.0 K).