1.7 – Dimensional Analysis

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Presentation transcript:

1.7 – Dimensional Analysis

Dimensional Analysis – Also known as Factor Labeling A method of converting from one unit to another Use conversion factors- An equality relating two different measurement scales, such as 1 foot = 12 inches

Conversions to use 1 cm3 = 1 mL 1 L = 1.06 qt 1 lb = 453.6 g 1 kg = 2.20 lb 1 in = 2.54 cm 1 m = 39.37 in 1 mile = 1.609 km 1 gal = 4 qt 1 mile = 5280 ft 1 yard = 3 ft

1. A distance of 320. inches is equal to how many feet?

2. 17.4 hours is equal to how many minutes?

3. Change 12.3 miles/hr into km/sec

4. Change 2.44 lb/qt into kg/L

Temperature SI’s base unit is the Kelvin 1° Celsius and 1° Kelvin are the same size, just shifted on the scale

To change between K and °C, K = °C + 273 °C = K - 273 You can also change between °F and °C °C  °F -------------------------------------> °F = (1.8) (°C) + 32 °F  °C -------------------------------------> °C = (°F – 32)/1.8

There is no direct conversion between the Kelvin scale and the Fahrenheit scale. You must first convert the temperature to Celsius, and then to the other scale. Convert the following 98.6 C to K and F 212 F to C and K