Question

In the winter, the outdoor temperature is -12 F. What is the temperature in the Kelvin scale:

a.249 K
b.262 K
c.284 K
d.273 K
e.178 K

Answer 1

To convert -12 F to Kelvin, first convert to Celsius (-24.44°C) and then add 273.15 to get 248.71 K. The closest whole number is 249 K, so option a is correct.option a.

Step-by-step explanation:

To convert a temperature from Fahrenheit to Kelvin, we must first convert it to Celsius and then convert that temperature to Kelvin. According to the formula, C = (F - 32) × 5/9, where F is the temperature in Fahrenheit and C is the temperature in Celsius. Then we use the Kelvin conversion formula, K = C + 273.15. For an outdoor temperature of -12 F, we first convert it to Celsius:

C = (-12 - 32) × 5/9

C = (-44) × 5/9

C = -24.44°C

Then we convert -24.44°C to Kelvin:

K = -24.44 + 273.15

K = 248.71 K

Therefore, the correct answer is a. 249 K, when rounded to the nearest whole number.