Question

The coldest temperature ever recorded on Earth was -128.6°F (recorded at Vostok Station, Antarctica, on July 21, 1983). Express this temperature in degrees Celsius and in kelvins. (a) -89.2°C, -89.2 K (b) -289.1°C, -15.9K (c) -89.2°C, 183.9K (d) 173.9°C, 99.3K (e) -7.0°C, 266.2K

Answer 1

Answer : The correct option is, $-89.2^oF\text{ and }183.9K$

Explanation :

The conversion used for the temperature from Fahrenheit to degree Celsius is:

$^oC=(^oF-32)\times \frac{5}{9}$

where,

$^oF$ = temperature in Fahrenheit

$^oC$ = temperature in centigrade

The conversion used for the temperature from degree Celsius to Kelvin is:

$K=273.15+^oC$

where,

$K$ = temperature in Kelvin

$^oC$ = temperature in centigrade

As we are given the temperature in Fahrenheit is, -10

Now we have to determine the temperature in degree Celsius.

$^oC=(^oF-32)\times \frac{5}{9}$

$^oC=(-128.6^oF-32)\times \frac{5}{9}$

$^oC=-89.2$

Now we have to determine the temperature in Kelvin.

$K=273.15+^oC$

$K=273.15+(-89.2^oC)$

$K=183.9$

Therefore, the temperature in degree Celsius and Kelvin are, $-89.2^oF\text{ and }183.9K$