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11 miles x 1.609347 = 17.70281 km. The first significant digit of the metric value (1) is equal to the first significant digit of the inch-pound value (1). Therefore the number of significant digits to be retained in the converted value is the same as that for the original value (2), and the result is 18 km.
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Volume - Lumber Converter. A unit is a measurement of a quantity that is defined or adopted by tradition or law. Other quantities can be expressed as a multiple of the unit. In human history, various unit systems were developed and used in different regions and cultures. Currently, the global standard of measurement is the International System ...
Metric Conversion Worksheets. As well as metric conversion charts, we also have a selection of metric conversion worksheets. The sheets involve converting from a range of metric units. They are a great resources for practicing multiplying and dividing by 10, 100 and 1000. Metric Conversion Worksheets.
FACTORS FOR UNIT CONVERSIONS. Prof. Faith A. Morrison Department of Chemical Engineering. Quantity. Equivalent Values. Mass. 1 kg = 1000 g = 0.001 metric ton = 2.20462 lbm = 35.27392 oz. 1 lbm = 16 oz = 5 x 10‐4 ton = 453.593 g = 0.453593 kg. Length.
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- Introduction
- Background
- Examples Illustrating The Use of The Conversion Factors
- Summary
- References
Today it is very important to be able to understand measurements in both the English system of units and the SI (Systems International) system of units. The SI system of units (often referred to as the metric system) is the official system for measurements in nearly all countries of the world, but not in the U.S. As our society and economy become m...
Table 1 presents the conversion multiplication factors to convert from English units to SI units (and vice versa) for basic measurements including length, weight, area, volume, bulk density, mass flow rate, volume flow rate, pressure and power. Additional conversion factors are presented for energy, energy density, and energy yields. SI prefixes in...
Example 1
A field is 160 acres and you want to express that area in hectares. Find the Areacategory in Table 1. Since the known unit is "Acres", find the numeral "1" under the acre column. Follow that line to the right to find the corresponding multiplication factor of 0.4047 under the hectare column. The area of the 160 acre field in hectares is 64.8 hectares (160 x 0.4047). For another exercise involving area, calculate how many sq ft (square feet) are in a plot that is 0.6 hectare. Find the numeral...
Example 2
Energy content of buckwheat is 15.5 MJ/kg (Mega Joules per kilogram). What is the energy density in units of BTU/lb? Go to the category of Energy Densityin Table 1 and find the column for MJ/kg. Locate the numeral "1" under that column and then read to the left to get the multiplication factor of 429.922 under the BTU/pound column. The energy density of the buckwheat as 6,664 BTU/lb (15.5 x 429.922).
Example 3
An electric resistance heating system rated at 25 kW is to be replaced with a propane furnace. What BTU/Hr rating of propane furnace is needed for the same heating capacity? Under the Powercategory in Table 1, locate the numeral "1" under the kW column. Then under the BTU/Hr column, find the multiplier of 3,412. The BTU/Hr rating of the propane furnace to be equivalent to the electric heating system is 85,300 BTU/Hr (25 x 3,412).
Careful attention to dimensions cannot be over-emphasized. The consistent use of the conversion factors and equations presented in this fact sheet should practically eliminate any errors associated with converting from the English system of units to the SI system and vice versa. Contemporary global systems for communications, commerce, and finance ...
ASHRAE Handbook of Fundamentals, Atlanta, GA, 2005.Marks' Standard Handbook for Mechanical Engineers, 2006.However, conversion factors may require greater degrees of accuracy to ensure non-zero outcomes. General conversion tables Based on the above principles and sources, Platts publishes below a list of conversion factors between US Imperial and SI units for given quantities. In addition to the set of base quantity conversions, Platts
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statvolt (CGS unit) statV. ≘ c ⋅ (1 μJ/A⋅m) = 299.792458V. volt (SI unit) V. The difference in electric potential across two points along a conducting wire carrying one ampere of constant current when the power dissipated between the points equals one watt. [ 32 ] = 1 V = 1 W/A = 1 kg⋅m2/ (A⋅s3) = 1 J/C.
