Joule Essays

What do the calories found on our nutritional labels mean? “A kilojoule is a unit of measure of energy, in the same way that kilometres measure distance. Food energy can also be measured in terms of the nutritional or ‘large’ Calorie (Cal), which has the same energy value as 4.186 kilojoules (kJ). This should not be confused with the ‘small’ or gram calorie, which is used by scientists to measure the amount of energy required to heat water. There are 1,000 (small) calories in one (large) Calorie

Why walking is better than running? As a human you started to crawl in the beginning and then slowly you started stand and then to walk. As you grow you are committed to your work and other activities which have reduced your walking practices. Everyone usually needs some reason to walk and to do exercise. Yes, it is true that many among us walk nowadays because their doctors have advised them to do so. Do you know that, walking is the only simple exercise which can be regularly followed by everyone

that comes to mind when I hear about James Joule. He was able to accomplish great things due to the way in which he lived his life. He has contributed significantly to science with his experimentation. In addition to this, he lived a life of impressive morals and goals. One primarily emphasized aspect of his life is, understandably, his scientific contributions. The modern unit J (Joule) was named after him in honor of the research he conducted. Joule managed to become one of the most influential

In this lab we investigated the energy content of two fuels by using them to heat water. We are to use two different types of fuel to measure the amount of heat produces by each fuel source. Our two fuel sources include propanol and ethanol. The objective of the experiment is to find out which fuel source has the better rate of heating and is more efficient by comparing the results to see which heat up the water to a specific temperature and seeing which fuel source used the least amount of fuel

thermal and sound energy. Children can also learn about energy transfers and are able to acknowledge them in everyday life. The original hurler begins with 0.196 joules of gravitational potential energy and ends with 0.34225 joules of kinetic energy, giving it an energy efficiency of 170%. The modified hurler begins with 0.057 joules of

I. Introduction This experiment uses calorimetry to measure the specific heat of a metal. Calorimetry is used to observe and measure heat flow between two substances. The heat flow is measured as it travels from a higher temperature to a lower one. Specific heat is an amount of heat required to raise the temperature of one gram of anything one degree Celsius. Specific heat is calculated using several equations using the base equation: q=mc∆T II. Materials 1 calibrated thermometer, 1 scale that

determined, which depends on heat of the water mass of the water and mass of the solid, then molar mass using: MM= 25/(S.H.(J/(g℃)) ) In the Part B of the experiment q_(H_2 O) for the reaction was find to be 2279.5 joules, ∆H for the reaction = -2279.5 joules, ∆Hsolution = -455.9 joules/g. This solution reaction is exothermic; because temperature was increased meaning heat was released. In the last part of the experiment, neutralization reaction was investigated. NaOH(aq) + HCl(aq) NaCl(aq) +

Despite the negative publicity of incidents such as the reactor meltdown at Three Mile Island and the Chernobyl disaster, nuclear power remains a viable source of energy. Nuclear power produces large amounts of energy without damaging the environment with large amounts of carbon dioxide. In addition, nuclear power is more economical than traditional energy sources. Not only does it cost less to produce, it benefits the economy by creating new employment positions. Finally, nuclear energy results

isn’t the smoothest. With all of the dowels and glue, our track has become a little bumpy and as our roller coaster sways more, the usable energy lost increases along with friction. Using the first turn as an example, the PE was .035 joules and the KE was .003 joules. This shows that our PE vs. KE is fairly different. The usable energy lost was .025 j, which shows that our roller coaster had a good amount of friction. Our total energy at the start of our coaster was .063, with the same potential energy

Ethanol made from a corn base is bad, because ethanol contributes to global warming, it takes enormous amounts of corn and land to create, it’s a corrosive substance, it can melt steel, and it’s not cost effective. Several people tend to think corn based ethanol is better for their car, and gets them better gas milage. These people are unfortunately wrong. Among some of the worst effects caused from using corn based ethanol is that, ethanol results to increased carbon emissions of up to 20%, thus

StudyBlueUtahWeber State UniversityPhysicsPhysics 1010Galli Exam 1 Exam 1 Physics 1010 with Galli at Weber State University † † The material on this site is created by StudyBlue users. StudyBlue is not affiliated with, sponsored by or endorsed by the academic institution or instructor. Get started today for free Matthew R. Created: 2015-02-10 Last Modified: 2015-02-10 Size: 28 Views: 140 Formula for speed V=d/t Newton's First Law of Mortion Law of Inertia An object in motion tends to stay in motion

nonconservative forces such as friction or applied forces). The cart rolling down an incline shows the conservation of energy as before the cart was let go, all of the energy was stored as potential energy. Initially, all of the kinetic energy was 0 Joules; so all of the energy was potential energy. When the cart reached the end of the ramp, all of the potential energy (theoretically) was converted into kinetic energy. (On the calculations, the initial and final heights had to be taken into account

non-spontaneous and requires external energy/force to initiate it. The Gibbs free energy equation is defined as: 〖∆G〗_f^θ=〖∆H〗_f^θ-T∆S_f^θ ΔG = change in Gibbs free energy, joules ΔH = change in enthalpy (change in heat), joules T = temperature, Celsius ΔS = change in entropy (change in the behavior of particles in a reaction), joules per Celsius The “f” and “θ” reads: formation under standard conditions (represented by θ). Formation is a type of chemical reaction and standard conditions are at 25ºC

and kinetic energy are converted will be easier to grasp. The kinetic energy of the bike, occurs when the bike is in motion. If the bike were to begin a downhill descent, then it would possess kinetic energy. Kinetic energy is also measured in Joules (J). To calculate kinetic energy use the equation KE= 1/2mv². The m in the equation represents the mass, and the v represents

to make it good for us. Another one of the major problems of bottled water is all the resources used to make the bottle. Like I said before, it takes about 1/4 of the bottle filled with oil just to make the bottle. It also takes around 3.4 mega joules of energy to make a typical one-liter plastic bottle, cap, and packaging.

Michael Vey The Final Spark was one of the most electrifying books I have ever read. The beginning starts off with Micheal missing and the electroclan escaping Hades in the Joule. While trying to get fuel the Electroclan gets captured by the portuguese navy, and it's up to Ostin, Jack, and a few rebels to save them and free Tuvalu. In the final battle Michael comes back from the dead after regenerating and fights Hatch and the Elgen to the death on Funafuti, to find out who wins you have to read

is being brought to a rest. Forms of kinetic energy are: vibrational, rotational, and translational. An equation that is used to represent the kinetic energy (KE) of an object: KE = 0.5 • m • v2. The standard unit for kinetic energy is the joule (J). The joule is the standard unit for energy in general. If you were to double the speed

messes, known as tailing ponds (Pg. 189). The article goes on to say that the steam plants used to melt down Bitumen are destroying the forest to install pipelines and wells. The amount of energy used to create Bitumen “Is so high that one joule of energy makes 1.4 joules of Bitumen (Pg. 189), which has resulted in the gain of barely any energy. The people who work on the tar sands are mostly temporary workers, and Canada employees 250,000 of them. The Canadian authorities “view temporary workers as stocks

also add cold water hot water together to find how much heat would escape the calorimeter. We found that the calorimeter absorbed 71.1J/oC. Then this information to calculate the energy that was released by all of the chemical reaction. We found that Joules from NaCl = 340 J, NH4NO3 = 1340 J, CaCl2 = -2320 J, LiCl = -3600, Na2Cl3 = -720 J, NaC2H3O2= 1070 J. Then we used energy release from one one these rxn to calculate the Hor the KJ per mol rxn.

Fossil fuels are the predominant energy source in the modern world, mainly consisting of coal, natural gas and oil. Its extensive use can be attributed to the affordability and reliability of fossil fuels, with these factors preventing renewable energy sources like wind and solar power from surpassing its usage, and in the example of Australia, “around 86% of … electricity is generated from [fossil fuels], with renewable energy sources [making] up the remaining 14%” (Origin Energy, 2015). However