Converting Temperatures to the Celsius Scale

Conversion Formula:
To convert temperatures from the Kelvin scale to the Celsius scale, we can use the following formula:
Celsius (°C) = Kelvin (K) - 273.15

Conversion of Temperatures:
(a) 293K
To convert 293 Kelvin to Celsius, we can use the conversion formula mentioned above:
Celsius (°C) = 293K - 273.15
Celsius (°C) = 19.85°C

Therefore, 293 Kelvin is equal to 19.85 degrees Celsius.

(b) 470K
To convert 470 Kelvin to Celsius:
Celsius (°C) = 470K - 273.15
Celsius (°C) = 196.85°C

Therefore, 470 Kelvin is equal to 196.85 degrees Celsius.

Explanation:
The Celsius scale is a temperature scale in which the freezing point of water is 0 degrees Celsius and the boiling point of water is 100 degrees Celsius at standard atmospheric pressure. The Kelvin scale is an absolute temperature scale where 0 Kelvin represents absolute zero, the theoretical temperature at which all molecular motion stops.

To convert temperatures from the Kelvin scale to the Celsius scale, we subtract 273.15 from the given temperature in Kelvin. This is because the Kelvin scale starts from absolute zero, while the Celsius scale starts from the freezing point of water.

In the given examples, we are given temperatures in Kelvin and we need to convert them to Celsius. By using the conversion formula mentioned above, we subtract 273.15 from the given temperatures to obtain the equivalent temperatures in degrees Celsius.

Summary:
- To convert temperatures from Kelvin to Celsius, we use the formula Celsius (°C) = Kelvin (K) - 273.15.
- To convert 293 Kelvin to Celsius, we subtract 273.15 from 293K, resulting in 19.85°C.
- To convert 470 Kelvin to Celsius, we subtract 273.15 from 470K, resulting in 196.85°C.