Description of units mechanical, electric, magnetic 4 iii. After watching a video clip of a singer shattering a glass with his. Lower heating value considers vapor not to be useful and does not count. Gasoline chemical is put into our cars, and with the help of electrical energy from a battery, provides mechanical kinetic energy. We will be exploring these different forms of energy and learning more about them. Units and conversion factors table of contents section page references 3. If we know the power in watts of an appliance and how many seconds it is used we can calculate the number of joules of electrical energy which have been converted to sortie other form. Ieer will provide the answer key and, if you wish, an ieer technical. The process of conversion depends on the specific situation and the intended purpose.
Fuel and energy conversion and equivalence chart please note, the fuel economy estimates within this document are examples only. Energy unit conversion homework institute for energy and. Unit conversions energy, power, flux 84 energy is measured in a number of ways depending on what property is being represented. Energy can exist in many forms such as light, sound, heat, and electricity.
Here, we have provided a few practice questions to help you better understand the concept. Description of units mechanical, electric, magnetic 4. Some units constants, and conversions and energy of familiar. A metre describes length, a kilogram describes mass, a second describes time etc. Similarly, energy is a property that humans and others both living and nonliving matter possess to a greater or lesser extent. Energy measurements and conversion iowa state university. Irvine, physics and astronomy energy units and conversions 1 joule j is the mks unit of energy, equal to the force of one newton acting through one meter. The common energy forms include the radiant energy, kinetic energy and various types of potential energy. Discover a universal assistant for all of your unit conversion needs download the free demo version right away. Sustainable energy science and engineering center energy conversion concerned with the transformation of energy from sources such as fossil fuel and radiation from sun into conveniently used forms such as electrical energy, propulsive energy, heating and cooling. For accurate pricing, fuel source recommendations, and additional information, please contact your energy supplier. Energy value of a liquefied natural gas depends on the source of the gas and he process that is used to liquefy the gas.
The joule was explicitly intended as the unit of energy to be used in both electromagnetic and mechanical contexts. Conversion factors are provided in detailed tables at the end of this document. They are probably the first thing you learn in your physics class. Maine public service does not consult with customers regarding fuel source selection. Departmentofphysicalsciencesandengineering prince georges community college september7,2005 time 1day 24 hours 1440. Units and conversion factors table of contents section page references 3 i. He began work as a student on the energy standards hotline, and has served in several other positions supporting a variety of programs, including. Teacher content primer about a sound energy phenomenon 3. A unit is defined and adopted by convention, in other words, everyone agrees that the unit will be a particular quantity. Energy conversion table online unit conversion and. Energy is found in many things and thus there are different types of energy. These conversion tables are provided for your reference. There are many forms of energy, like the kinetic energy that describes the force behind the motion of a body or heat that describes the amount of thermal energy delivered.
Developing a portfolio for this unit is a wonderful way for students to inquire and to explore areas of the unit. Over the course of this unit, we will also be completing an energy group project. E notation is an alternative format of the scientific notation 10 x. Purchased electricity is fed into our tvs and is converted to light and sound. Unit conversion is one of the topics that you need to master in order to do well in physics. The footpound combines a unit of force a pound with a unit of distance a foot and is thereby a unit of work or energy. The unit of energy is the joule, the unit of power is the watt, and the unit of time is the second. Historic energy conversion sequences biomass heat esp. Unit symbol definition comments time second sec 1 s minute min 60 s hour hr 60 min. Transformations during this unit students will learn about what energy is, how kinetic and potential energy are related, some of the different forms of energy, how energy changes from one form to another, and ways in which energy can transfer throughout matter. Energy unit conversion homework ieer workshop 2010 this is an optional exercise that will put you on your technical toes in time for the ieer workshop. This is a condensed and revised version of those recommendations.
Btu conversion factors are generally used to convert energy data from physical units of measure such as barrels, cubic feet, or short tons into the energy. Unit conversion conversion of units unit conversion table. Process that releases energy by breaking down glucose and othe a simple sugar that is an important source of energy. Main page factors main page online unit converter conversion factors search resources license contact deutsch espanol mbtu conversion factors energy all energy conversion tables. A multitude of choices and challenges face the modern energy conversion engineer. The above definition of energy highlights the fact that energy conversion is essential for energy.
Most conversion factors and data are given to only 3 significant figures. Energy units and fundamentals of quantitative analysis. Btu conversion factors are generally used to convert energy data from physical units of measure such as. Energy units and conversions uci physics and astronomy. Units and symbols in solar energy in 1977, a committee of ises developed a set of recommended nomenclature for papers appearing in solar energy. The energy can be converted to in different forms, however, its total energy is not changed.
Kinetic, potential, thermal, chemical, electromagnetic etc. Unit conversion table standard prefixes prefix used in code prefix for written unit multiplier. The efficiency of an energy conversion device is a quantitative expression of this balance between energy input and energy output. Schematic representation of an energy conversion device.
Energy unit conversion to aa ajlm acm vhz ekev wncm1 eerg from. Energy and work unit converter measurement conversion ai. Home energy rating system hers, acceptance test technician certification provider attcp, low interest energy. The definition of the energy conversion efficiency is the useful energy output benefit divided by the energy input cost. During this unit students will learn about what energy is, how kinetic and potential energy are related, some of the different forms of energy, how energy changes from one form to another, and ways in which energy can transfer throughout matter. Helping you to find an conversion answer as quickly as possible is always our top priority. Work, energy and power are the most used terms in physics. Total energy joules and ergs the total amount of energy in various forms kinetic, potential, magnetic, thermal, gravitational. To convert from a unit y in the left hand column to a unit x in the top row, mutiply by the table element, m x,y. For electric power, quantity and quality are described by current and voltage.
By the end of grade 8, students should be able to identify the kinds of energy involved in common scenarios, explain energy transformations in terms of the. Free online energy converter converts between 55 units of energy, including joule j, kilojoule kj, kilowatthour kwh, watthour wh, etc. Sources this sheet was compiled based on several other useful fact sheets and online resources. Energy units and conversions by dennis silverman u. Irvine, physics and astronomy energy units and conversions 1 joule j is the mks unit of energy, equal to the. Energy in physics, its a measurable quantity that describes the state of matter and its ability to perform work. Mbtu conversion table energy online unit converter. Converter other energy unit to joule joule to other unit. Conversion factors for bioenergy nc state extension. Energy can be divided into quantity and quality terms.
U 5 ower to heat ratio is the electric power output divided by the useful thermal output. Unit 4 lesson 1 energy conversion and conservation. In this unit, we will be studying energy the ability to do work. Try your hand at the four problem sets below, perhaps during the plane ride for you travelers. It was compiled from a wide range of sources, and is designed to be concise and convenient rather than allinclusive. The unity bracket method of unit conversion consists of a fraction in which the denominator is equal to the numerator. A unit of measurement refers to a particular physical quantity. Most of these numbers have been taken from an old book by karplus and porter. Energy and work conversion table unit conversion online.
Many different energy equivalents to convert between. Higher heating value includes the energy of water vaporization. Standard unit multipliers are used to convert billed units to kbtu. He has over 15 years of experience working at the energy commission. Conversion of light energy from the sun into chemical energy. Chapter 2 concept of energy penn state college of earth. Please consider supporting the site with a small donation. Conversion of units is the conversion between different units of measurement for the same quantity, typically through multiplicative conversion factors techniques. Energy conversion efficiency is one of the key characteristics of energy systems. The below will give you a quick glance on each energy unit. Dimensions and units for physical quantities mksq system 6,7 a. Ask the students to write in their learning logs what they think potential energy and kinetic energy are, based on what they have witnessed during the demonstrations.
Start studying unit 4 lesson 1 energy conversion and conservation. The joule was now no longer defined based on electromagnetic unit, but instead as the unit of work performed by one unit of force at the time not yet named newton over the distance of 1 metre. If you have your fuel data in an energy unit, you can convert it to mwh using a conversion tool such as. A conversion factor is used to change the units of a measured quantity without changing its value. Energy conversion device energy input energy output energy output energy input 1st law useful energy output energy input 2nd law figure 41. B2 appendix b systems of units and conversion factors measurements are made. This also gives the change in potential energy of the 1 pound weight. All forms of energy are either kinetic or potential.
Units and symbols in solar energy solar energy conversion. Additionally, there is a conversion table listed in this guidance document. Unit conversions for mass units are in the table below. British thermal unit conversion factors the thermal conversion factors presented in the following tables can be used to estimate the heat content in british thermal units btu of a given amount of energy measured in physical units, such as barrels or cubic feet. Dimensions of esu and emu electric and magnetic quantities 5 v. A factor for converting energy data between one unit of measurement and british thermal units btu. Default converter custom converter conversion table download as pdf. Energy conversion calculator how to convert energy units. It is concerned with the transformation of energy from sources such as fossil and nuclear fuels and the sun into conveniently used forms such as electrical energy, rotational and propulsive energy, and heating and cooling.
The original appeared in solar energy 21,6168 1978. Also, explore many other unit converters or learn more about energy unit conversions. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Although a portfolio seems like a languagearts idea, a portfolio works great for science as well. Thermodynamics fundamentals for energy conversion systems. Papers about quantum gravity express mass, length, and time in terms of energy, usually powers of gev.
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