Unit Conversion

To convert a temperature from Celsius (°C) to Fahrenheit (°F), use the following formula:

(°C x 9/5) + 32 = °F

This formula involves multiplying the temperature in Celsius by 9/5 and then adding 32 to the result to get the temperature in Fahrenheit.

For example, to convert 20°C to Fahrenheit:

(20 x 9/5) + 32 = 68°F

Therefore, 20°C is equal to 68°F.

Kilometers (km) is a unit of distance, not speed. However, you can convert kilometers per hour (km/h) to other units of speed. Here's how to convert km/h to some other common units of speed:

1. To convert km/h to meters per second (m/s), divide the value in km/h by 3.6. For example, 60 km/h is equivalent to 16.67 m/s (60 ÷ 3.6 = 16.67).

2. To convert km/h to miles per hour (mph), multiply the value in km/h by 0.6214. For example, 60 km/h is equivalent to 37.28 mph (60 × 0.6214 = 37.28).

3. To convert km/h to feet per second (ft/s), multiply the value in km/h by 0.9114. For example, 60 km/h is equivalent to 54.68 ft/s (60 × 0.9114 = 54.68).

These formulas can be used to convert any value in kilometers per hour to the desired unit of speed.

• To calculate pressure conversion, you need to know the conversion factor between the two units of pressure you want to convert.
• For example, if you want to convert atmospheres (atm) to kilopascals (kPa), you would use the conversion factor 1 atm = 101.3 kPa.
• Once you know the conversion factor, you can simply multiply the value in the initial unit by the conversion factor to get the value in the desired unit.
• For example, if you want to convert 2 atm to kPa, you would multiply 2 by 101.3 to get 202.6 kPa.
• Here is the general formula for converting pressure from one unit to another:

Value in desired unit = Value in initial unit x Conversion factor

• It's important to remember that when converting between units, you should also consider the appropriate significant figures and rounding rules.
• Additionally, some conversion factors may be exact while others may have some degree of approximation, so be sure to use the most accurate conversion factor available for your calculation.

The seven units of length in the International System of Units (SI) are:

1. Meter (m)
2. Kilometer (km)
3. Centimeter (cm)
4. Millimeter (mm)
5. Micrometer (μm)
6. Nanometer (nm)
7. Mile (ml)

These units are used to measure different distances, from very large distances like the size of a city or country to very small distances like the size of atoms and molecules.

• Mass conversion is the process of converting a value of mass from one unit of measurement to another.
• Mass is a measure of the amount of matter in an object and is typically measured in units such as grams, kilograms, pounds, and ounces.
• Mass conversion is often necessary when working with different systems of measurement or when comparing values measured in different units.
• To convert mass from one unit to another, you need to use the appropriate conversion factor or formula that relates the two units of measurement.
• This can be done manually using conversion tables or formulas, or by using a mass conversion calculator.

The formula for plane angle is:

θ = s / r

Where:

θ is the angle in radians. s is the arc length of the sector. r is the radius of the circle.

Alternatively, we can use the formula:

θ = L / (2πr)

Where:

• θ is the angle in radians
• L is the length of the arc
• r is the radius of the circle
• π is the mathematical constant pi, approximately equal to 3.14159.

To convert frequency units, you can use a frequency conversion calculator or follow these steps:

1. Determine the frequency value you want to convert.

2. Determine the unit of measurement for the frequency value you want to convert from.

3. Determine the unit of measurement you want to convert the frequency value to.

4. Use the appropriate conversion factor to convert between the two units of measurement.

5. Multiply the frequency value by the conversion factor.

6. The result will be the frequency value in the desired unit of measurement.

A good fuel economy is a relative term and can depend on several factors, such as the type of vehicle, the driving conditions, and the fuel type. Here is a table showing the fuel economy ratings for cars based on EPA ratings in the United States:

Note that these ratings are based on standardized tests and may not accurately reflect real-world driving conditions or individual driving habits. Additionally, fuel economy can vary based on the type of vehicle and the fuel type used. Therefore, it's important to consider other factors, such as the cost of fuel and the environmental impact, when evaluating the fuel economy of a vehicle.