Fundamentals of Math CHAPTER 1
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5 Military Rucking Rules Every Backpacker Should Know 1. One
5 Military Rucking Rules Every Backpacker Should Know The military has spent years studying the best way to move under a load (aka “rucking”). Here are 5 military rucking rules that translate well to hikers. “Rucking” is the military term for hiking under load. As you can imagine, this is a huge issue for the military, as soldiers must wear body armor and carry weapons, ammo, water, communications equipment, and other gear as they conduct patrols and missions. Rucking performance and injury prevention are hugely important for military operations and personnel. Movement over ground under load is also a key for hiking and backpacking. In reviewing the research the military has already done on this subject, we discovered five rules. Read on to make sure you’re following these military rucking rules on your next backcountry adventure. 1. One pound on your feet equals five pounds on your back. This old backpacking thumb rule holds true, according to a 1984 study from the U.S. Army Research Institute. They tested how much more energy was expended with different footwear (boots and shoes) and concluded that it take 4.7 to 6.4 times as much energy to move at a given pace when weight is carried on the shoe versus on the torso. In practical terms, this means you could carry half a gallon more of water (a little over 4 pounds) if you buy boots that are a pound lighter, which isn’t hard to do; and that’s a lot of water. Now imagine the energy savings of backpacking in light trail running shoes rather than heavy, leather backpacking boots over the course of 7- day backpacking trip. -
The Meter Greeters
Journal of Applied Communications Volume 59 Issue 2 Article 3 The Meter Greeters C. Hamilton Kenney Follow this and additional works at: https://newprairiepress.org/jac This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 4.0 License. Recommended Citation Kenney, C. Hamilton (1976) "The Meter Greeters," Journal of Applied Communications: Vol. 59: Iss. 2. https://doi.org/10.4148/1051-0834.1951 This Article is brought to you for free and open access by New Prairie Press. It has been accepted for inclusion in Journal of Applied Communications by an authorized administrator of New Prairie Press. For more information, please contact [email protected]. The Meter Greeters Abstract The United States and Canada became meter greeters away back in the 1800's. The U.S. Congress passed an act in 1866 legalizing the metric system for weights and measures use, and metric units were on the law books of the Dominion of Canada in 1875. This article is available in Journal of Applied Communications: https://newprairiepress.org/jac/vol59/iss2/3 Kenney: The Meter Greeters The Meter Greeters C. Hamilton Kenney The United States and Canada became meter greeters away back in the 1800's. The U.S. Congress passed an act in 1866 legalizing the metric system for weights and measures use, and metric units were on the law books of the Dominion of Canada in 1875. The U.S. A. was a signatory to the Treaty of the Meter l signed in Paris, France. in 1875, establishing the metric system as an international measurement system, but Canada did not become a signatory nation until 1907. -
Weights and Measures Standards of the United States: a Brief History
1 .0 11 8 1.25 1.4 I 6_ DOCUMENT RESUME ED 142 418 SE 022 719 AUTHOE Judson, Lewis V. TITLE Weights and Measures Standards of the United States: A Brief History. Updated Edition. INSTITUTION National Bureau of Standards (DOC) ,Washington, D.C. REPORT NO NBS-SP-447 PUB DATE Mar 76 NOTE 42p.; Contains occasional small print; Photographs may not reproduce well AVAILABLE FROM Superintendent of Documents, U.S. Government Printing Office, Washington, D.C. 20402 (Stock Number 003-0O3-01654-3, $1.00) EDRS PRICE MF-$0.83 HC-$2.06 Plus Postage. DESCRIPTORS Government Publications; History; *Mathematics Education; *Measurement; *Metric System; *Science History; *Standards ABSTRACT This document was published by the National Bureau of Standards to meet the current demand for information on the history of weights and measures in the United States. It includes an illustrated discussion of this history through 1962 followed by an addendum covering the period 1963-1975. Appendices provide a bibliography and photographic copies of eight documents important to the development of official standards of measurement. (SD) *********************************************************************** Documents acquired by ERIC include many informal unpublished * materials not available from other sources. ERIC makes every effort * * -to obtain the best copy available. Nevertheless, items of marginal * * reproducibility are often encountered and this affects the quality * * of the microfiche and hardcopy reproductions ERIC makes available * via the ERIC Document Reproduction Service (EDRS). EDRS is not * responsible for the quality of the original document. Reproductions * * supplied by EDRS are the best that can be made from the original. *********************************************************************** U.S. DEPARTMENT OF HEALTH. -
Water Heater Formulas and Terminology
More resources http://waterheatertimer.org/9-ways-to-save-with-water-heater.html http://waterheatertimer.org/Figure-Volts-Amps-Watts-for-water-heater.html http://waterheatertimer.org/pdf/Fundamentals-of-water-heating.pdf FORMULAS & FACTS BTU (British Thermal Unit) is the heat required to raise 1 pound of water 1°F 1 BTU = 252 cal = 0.252 kcal 1 cal = 4.187 Joules BTU X 1.055 = Kilo Joules BTU divided by 3,413 = Kilowatt (1 KW) FAHRENHEIT CENTIGRADE 32 0 41 5 To convert from Fahrenheit to Celsius: 60.8 16 (°F – 32) x 5/9 or .556 = °C. 120.2 49 140 60 180 82 212 100 One gallon of 120°F (49°C) water BTU output (Electric) = weighs approximately 8.25 pounds. BTU Input (Not exactly true due Pounds x .45359 = Kilogram to minimal flange heat loss.) Gallons x 3.7854 = Liters Capacity of a % of hot water = cylindrical tank (Mixed Water Temp. – Cold Water – 1⁄ 2 diameter (in inches) Temp.) divided by (Hot Water Temp. x 3.146 x length. (in inches) – Cold Water Temp.) Divide by 231 for gallons. % thermal efficiency = Doubling the diameter (GPH recovery X 8.25 X temp. rise X of a pipe will increase its flow 1.0) divided by BTU/H Input capacity (approximately) 5.3 times. BTU output (Gas) = GPH recovery x 8.25 x temp. rise x 1.0 FORMULAS & FACTS TEMP °F RISE STEEL COPPER Linear expansion of pipe 50° 0.38˝ 0.57˝ – in inches per 100 Ft. 100° .076˝ 1.14˝ 125° .092˝ 1.40˝ 150° 1.15˝ 1.75˝ Grain – 1 grain per gallon = 17.1 Parts Per million (measurement of water hardness) TC-092 FORMULAS & FACTS GPH (Gas) = One gallon of Propane gas contains (BTU/H Input X % Eff.) divided by about 91,250 BTU of heat. -
Forests Commission Victoria-Australia
VICTORIA, 1971 FORESTS COMMISSION VICTORIA-AUSTRALIA FIFTY SECOND ANNUAL REPORT FINANCIAL YEAR 1970-71 PRESENTED TO BOTH HOUSES OF PARLIAMENT PURSUANT TO ACT No. 6254, SECTION 35 . .Approximate Cosl of llrport.-Preparation, not given. Printing (250 copies), $1,725.00. No. 14-9238/71.-Price 80 cents FORESTS COMMISSION, VICTORIA TREASURY GARDENS, MELBOURNE, 3002 ANNUAL REPORT 1970-71 In compliance with the provisions of section 35 of the Forests Act 1958 (No. 6254) the Forests Commission has the honour to present to Parliament the following report of its activities and financial statements for the financial year 1970-71. F. R. MOULDS, Chainnan. C. W. ELSEY, Commissioner. A. J. THREADER, Commissioner. F. H. TREYV AUD, Secretary. CONTENTS PAGE 6 FEATURES. 8 fvlANAGEMENT- Forest Area, Surveys, fvlapping, Assessment, Recreation, fvlanagement Plans, Plantation Extension Planning, Forest Land Use Planning, Public Relations. 12 0PERATIONS- Silviculture of Native Forests, Seed Collection, Softwood Plantations, Hardwood Plantations, Total Plantings, Extension Services, Utilization, Grazing, Forest Engineering, Transport, Buildings, Reclamation and Conservation Works, Forest Prisons, Legal, Search and Rescue Operations. 24 ECONOMICS AND fvlARKETING- Features, The Timber Industry, Sawlog Production, Veneer Timber, Pulpwood, Other Forest Products, Industrial Undertakings, Other Activities. 28 PROTBCTION- Fire, Radio Communications, Biological, Fire Research. 32 EDUCATION AND RESEARCH- Education-School of Forestry, University of fvlelbourne, Overseas and Other Studies ; Research-Silviculture, Hydrology, Pathology, Entomology, Biological Survey, The Sirex Wood Wasp; Publications. 38 CONFERENCES. 39 ADMINISTRATJON- Personnel-Staff, Industrial, Number of Employees, Worker's Compensation, Staff Training ; fvlethods ; Stores ; Finance. APPENDICES- 43 I. Statement of Output of Produce. 44 II. Causes of Fires. 44 III. Summary of Fires and Areas Burned. -
Student Academic Learning Services Pounds Mass and Pounds Force
Student Academic Learning Services Page 1 of 3 Pounds Mass and Pounds Force One of the greatest sources of confusion in the Imperial (or U.S. Customary) system of measurement is that both mass and force are measured using the same unit, the pound. The differentiate between the two, we call one type of pound the pound-mass (lbm) and the other the pound-force (lbf). Distinguishing between the two, and knowing how to use them in calculations is very important in using and understanding the Imperial system. Definition of Mass The concept of mass is a little difficult to pin down, but basically you can think of the mass of an object as the amount of matter contain within it. In the S.I., mass is measured in kilograms. The kilogram is a fundamental unit of measure that does not come from any other unit of measure.1 Definition of the Pound-mass The pound mass (abbreviated as lbm or just lb) is also a fundamental unit within the Imperial system. It is equal to exactly 0.45359237 kilograms by definition. 1 lbm 0.45359237 kg Definition of Force≡ Force is an action exerted upon an object that causes it to accelerate. In the S.I., force is measured using Newtons. A Newton is defined as the force required to accelerate a 1 kg object at a rate of 1 m/s2. 1 N 1 kg m/s2 Definition of ≡the Pound∙ -force The pound-force (lbf) is defined a bit differently than the Newton. One pound-force is defined as the force required to accelerate an object with a mass of 1 pound-mass at a rate of 32.174 ft/s2. -
U5 Determining Density
Presentation Name Course Name Unit # – Lesson #.# – Lesson Name Density • Density is a measure of the amount of matter per unit of volume Determining Density High Density Low Density – Objects more dense than water sink – Objects less dense than water float Matter: Mass vs. Weight Matter: Mass vs. Weight Mass and Weight are often confused • Mass is the amount of matter in an object or the • An example using SI units quantity of the inertia of the object – A man has a mass of 100 kg • Weight is the force of gravity on mass W = mg W = mg 2 W = (100 kg)(9.8 m/sec ) W = weight = 980 Newton m = mass g = acceleration of gravity – He weighs 980 N • Many materials are purchased by weight Project Lead The Way, Inc. Copyright 2010 1 Presentation Name Course Name Unit # – Lesson #.# – Lesson Name Matter: Mass vs. Weight Mass vs. Weight Mass and Weight are often confused • Pound-mass (lbm) is a unit of mass • US Customary units example . 1 lbm = 0.45359237 kg (by definition) – A woman weighs 100 pounds . 1 kg = 2.205 lbm (formula sheet) . 1 slug = 32.2 lbm (formula sheet) W = mg W Formula Sheet m = g 100 lb = = 3.1 slugs ft 32.2 s2 – Her mass is 3.1 slugs Mass vs. Weight Mass vs. Weight • Pound-force (lb) is a unit of force • How are pound-mass and pound-force . The gravitational force exerted on a mass of related? 2 one lbm on the surface of the Earth – On Earth (g = 32.174 ft/s ) . -
Weights and Measures Standards of the United States—A Brief History (1963), by Lewis V
WEIGHTS and MEASURES STANDARDS OF THE UMIT a brief history U.S. DEPARTMENT OF COMMERCE NATIONAL BUREAU OF STANDARDS NBS Special Publication 447 WEIGHTS and MEASURES STANDARDS OF THE TP ii 2ri\ ii iEa <2 ^r/V C II llinCAM NBS Special Publication 447 Originally Issued October 1963 Updated March 1976 For sale by the Superintendent of Documents, U.S. Government Printing Office Wash., D.C. 20402. Price $1; (Add 25 percent additional for other than U.S. mailing). Stock No. 003-003-01654-3 Library of Congress Catalog Card Number: 76-600055 Foreword "Weights and Measures," said John Quincy Adams in 1821, "may be ranked among the necessaries of life to every individual of human society." That sentiment, so appropriate to the agrarian past, is even more appropriate to the technology and commerce of today. The order that we enjoy, the confidence we place in weighing and measuring, is in large part due to the measure- ment standards that have been established. This publication, a reprinting and updating of an earlier publication, provides detailed information on the origin of our standards for mass and length. Ernest Ambler Acting Director iii Preface to 1976 Edition Two publications of the National Bureau of Standards, now out of print, that deal with weights and measures have had widespread use and are still in demand. The publications are NBS Circular 593, The Federal Basis for Weights and Measures (1958), by Ralph W. Smith, and NBS Miscellaneous Publication 247, Weights and Measures Standards of the United States—a Brief History (1963), by Lewis V. -
Imperial Units
Imperial units From Wikipedia, the free encyclopedia Jump to: navigation, search This article is about the post-1824 measures used in the British Empire and countries in the British sphere of influence. For the units used in England before 1824, see English units. For the system of weight, see Avoirdupois. For United States customary units, see Customary units . Imperial units or the imperial system is a system of units, first defined in the British Weights and Measures Act of 1824, later refined (until 1959) and reduced. The system came into official use across the British Empire. By the late 20th century most nations of the former empire had officially adopted the metric system as their main system of measurement. The former Weights and Measures office in Seven Sisters, London. Contents [hide] • 1 Relation to other systems • 2 Units ○ 2.1 Length ○ 2.2 Area ○ 2.3 Volume 2.3.1 British apothecaries ' volume measures ○ 2.4 Mass • 3 Current use of imperial units ○ 3.1 United Kingdom ○ 3.2 Canada ○ 3.3 Australia ○ 3.4 Republic of Ireland ○ 3.5 Other countries • 4 See also • 5 References • 6 External links [edit] Relation to other systems The imperial system is one of many systems of English or foot-pound-second units, so named because of the base units of length, mass and time. Although most of the units are defined in more than one system, some subsidiary units were used to a much greater extent, or for different purposes, in one area rather than the other. The distinctions between these systems are often not drawn precisely. -
English Customary Weights and Measures
English Customary Weights and Measures Distance In all traditional measuring systems, short distance units are based on the dimensions of the human body. The inch represents the width of a thumb; in fact, in many languages, the word for "inch" is also the word for "thumb." The foot (12 inches) was originally the length of a human foot, although it has evolved to be longer than most people's feet. The yard (3 feet) seems to have gotten its start in England as the name of a 3-foot measuring stick, but it is also understood to be the distance from the tip of the nose to the end of the middle finger of the outstretched hand. Finally, if you stretch your arms out to the sides as far as possible, your total "arm span," from one fingertip to the other, is a fathom (6 feet). Historically, there are many other "natural units" of the same kind, including the digit (the width of a finger, 0.75 inch), the nail (length of the last two joints of the middle finger, 3 digits or 2.25 inches), the palm (width of the palm, 3 inches), the hand (4 inches), the shaftment (width of the hand and outstretched thumb, 2 palms or 6 inches), the span (width of the outstretched hand, from the tip of the thumb to the tip of the little finger, 3 palms or 9 inches), and the cubit (length of the forearm, 18 inches). In Anglo-Saxon England (before the Norman conquest of 1066), short distances seem to have been measured in several ways. -
Appendix C. General Tables of Units of Measurement
Handbook 44 – 2016 Appendix C – General Tables of Units of Measurement Table of Contents Appendix C. General Tables of Units of Measurement ........................................................ C-3 1. Tables of Metric Units of Measurement ..................................................................................................... C-3 Units of Length ............................................................................................................................................... C-3 Units of Area .................................................................................................................................................. C-3 Units of Liquid Volume .................................................................................................................................. C-4 Units of Volume ............................................................................................................................................. C-4 Units of Mass .................................................................................................................................................. C-4 2. Tables of U.S. Customary Units of Measurement ..................................................................................... C-4 Units of Length ............................................................................................................................................... C-4 Units of Area ................................................................................................................................................. -
Your Driving Costs 2020
YOUR DRIVING COSTS 2020 How Much Does it Really Cost to Own a New Car? AAA Average Costs Per Mile Shown to the right are average per-mile costs for 2020 as determined by AAA, based on Miles per Year 10k 15k 20k the driving costs for nine vehicle categories Average Cost 82.36¢ 63.74¢ 54.57¢ weighted by sales. Detailed driving costs in each vehicle category are based on average costs for five top-selling 2020 models selected by AAA and can be found on pages 5 and 6. By category, they are: Î Small Sedan — Honda Civic, Hyundai Elantra, Î Minivan — Chrysler Pacifica, Dodge Grand Nissan Sentra, Toyota Corolla, Volkswagen Jetta Caravan, Kia Sedona, Honda Odyssey, Toyota Sienna Î Medium Sedan — Chevrolet Malibu, Ford Fusion, Honda Accord, Nissan Altima, Toyota Camry Î Pickup Truck — Chevrolet Silverado, Ford F-150, Î Large Sedan — Chevrolet Impala, Chrysler 300, Nissan Titan, Ram 1500 and Toyota Tundra Kia Cadenza, Nissan Maxima, Toyota Avalon Î Hybrid Car — Ford Fusion, Honda Insight, Î Small SUV — Chevrolet Equinox, Ford Escape, Hyundai Ioniq, Toyota Prius Liftback, Toyota Honda CR-V, Nissan Rogue, Toyota RAV4 RAV4 Î Medium SUV — Chevrolet Traverse, Ford Î Electric Car — BMW i3, Chevrolet Bolt, Hyundai Explorer, Honda Pilot, Jeep Grand Cherokee, Kona Electric, Nissan Leaf, Tesla Model 3 Toyota Highlander YOUR DRIVING COSTS | 2020 1 How to Calculate Your Own Driving Costs Start by figuring your gas cost per mile. To do this, you’ll need to keep track of your fueling habits over the course of one year. When your gas tank is full, write down the number of miles on your odometer.