Question

1. a kilogram is = to how many pounds?
2. define temperature.
3. what is fahrenheit?
4. what is celsius?
5. what equation do you use to convert from degrees celsius (°c) to degrees fahrenheit (°f)?
6. imagine a friend from canada calls you and says that it is 45°c outside. what is the temperature in degrees fahrenheit? to convert to degrees fahrenheit, substitute 45°c into the above equation and solve.
7. what equation do you use to convert from degrees fahrenheit (°f) to degrees celsius (°c)?
8. if it is 75°f outside, what is the temperature in degrees celsius?
9. which is warmer, 25°f or 25°c?

Explanation:

Step1: Kilogram - pound conversion

1 kilogram is approximately 2.20462 pounds.

Step2: Define temperature

Temperature is a measure of the average kinetic energy of the particles in a substance.

Step3: Define Fahrenheit

Fahrenheit is a temperature scale where water freezes at 32°F and boils at 212°F at standard atmospheric pressure.

Step4: Define Celsius

Celsius is a temperature scale where water freezes at 0°C and boils at 100°C at standard atmospheric pressure.

Step5: Celsius - Fahrenheit conversion formula

The formula to convert from Celsius ($C$) to Fahrenheit ($F$) is $F=\frac{9}{5}C + 32$.

Step6: Convert 45°C to Fahrenheit

Substitute $C = 45$ into the formula: $F=\frac{9}{5}\times45+32$. First, $\frac{9}{5}\times45=9\times9 = 81$. Then $81 + 32=113$. So 45°C is 113°F.

Step7: Fahrenheit - Celsius conversion formula

The formula to convert from Fahrenheit ($F$) to Celsius ($C$) is $C=\frac{5}{9}(F - 32)$.

Step8: Convert 75°F to Celsius

Substitute $F = 75$ into the formula: $C=\frac{5}{9}(75 - 32)=\frac{5}{9}\times43\approx23.9$°C.

Step9: Compare 25°F and 25°C

Convert 25°F to Celsius: $C=\frac{5}{9}(25 - 32)=\frac{5}{9}\times(- 7)\approx - 3.9$°C. Since 25°C > - 3.9°C, 25°C is warmer.

Answer:

1. Approximately 2.20462 pounds
2. A measure of the average kinetic energy of the particles in a substance
3. A temperature scale where water freezes at 32°F and boils at 212°F at standard atmospheric pressure
4. A temperature scale where water freezes at 0°C and boils at 100°C at standard atmospheric pressure
5. $F=\frac{9}{5}C + 32$
6. 113°F
7. $C=\frac{5}{9}(F - 32)$
8. Approximately 23.9°C
9. 25°C