what is 45 degree fahrenheit in celsius and kelvin. What is 90 degree celsius in fahrenheit and kelvin.
The correct answer and explanation is:
Let’s first calculate the conversions:
✅ Conversions
1. 45°F to Celsius and Kelvin
- To Celsius (°C):
°C=(°F−32)×59=(45−32)×59=13×59=7.22°C°C = (°F – 32) × \frac{5}{9} = (45 – 32) × \frac{5}{9} = 13 × \frac{5}{9} = 7.22°C - To Kelvin (K):
K=°C+273.15=7.22+273.15=280.37KK = °C + 273.15 = 7.22 + 273.15 = 280.37 K
2. 90°C to Fahrenheit and Kelvin
- To Fahrenheit (°F):
°F=(°C×95)+32=(90×95)+32=162+32=194°F°F = (°C × \frac{9}{5}) + 32 = (90 × \frac{9}{5}) + 32 = 162 + 32 = 194°F - To Kelvin (K):
K=°C+273.15=90+273.15=363.15KK = °C + 273.15 = 90 + 273.15 = 363.15 K
✅ Summary of Correct Answers
- 45°F = 7.22°C = 280.37 K
- 90°C = 194°F = 363.15 K
🧠 Explanation (300 words)
Temperature can be measured using different scales: Fahrenheit (°F), Celsius (°C), and Kelvin (K). Each scale has its own reference points and applications. Understanding how to convert between them is especially useful in scientific, medical, and everyday contexts.
Fahrenheit is commonly used in the United States for weather and cooking. The Celsius scale, used worldwide and in most scientific contexts, is based on water’s freezing (0°C) and boiling points (100°C). Kelvin, the SI unit for temperature, starts at absolute zero—the point where all molecular motion stops. Unlike Celsius and Fahrenheit, Kelvin does not use the word “degree.”
To convert Fahrenheit to Celsius, subtract 32 from the Fahrenheit value and multiply by 5/9. This gives us the equivalent temperature in Celsius. For instance, 45°F is relatively cool and equals about 7.22°C. Then, to get Kelvin, we simply add 273.15 to the Celsius value.
When converting Celsius to Fahrenheit, multiply by 9/5 and then add 32. For example, 90°C is a high temperature, and equals 194°F—common for oven settings. Again, add 273.15 to convert to Kelvin, which in this case is 363.15 K.
These conversions are essential in healthcare, meteorology, physics, and engineering. For example, nurses and medical professionals need to interpret temperatures correctly, especially when administering medications or managing patient care. Kelvin is vital in physics and chemistry for understanding thermodynamic behavior. Overall, accurate temperature conversions ensure safety, precision, and effective communication across disciplines.