Joule

1m =30x1 = 30J (J is joules which is unit of work) Note; If the house is held stationary, d=0 thus no work is done Energy and power Energy: (see page 65 in rochford book for eg) Only looking at mechanical energy which can come in two forms; Potential energy (PE): *If the brick is held 1m above the ground the brick has potential energy which is the energy a body has as a result of its position above the earth* = mass (m) x gravity (g) x height (h) Energy unit is Joules ( J ) PE = mgh =…

The specific area within the department I would like to pursue is the electromagnetic railgun development. Currently the Navy is working to create a 32 Mega-joule railgun that can fire at least 10 rounds of ammunition per minute. While the proof of concept has been achieved, the firing rate is still a work in progress. Due to sustained Joule heating from current flow, the rails are at constant risk of deformation. Solving this issue would save millions of dollars in ammunition and would make…

Truc-Nhi Do Ice Cube Inquiry The purpose of this lab was to create an experiment to find the heat of fusion, the amount of joules(energy) needed to change water from solid to liquid and vice versa. My team found that heat lost is equal to heat gain. To find the heat of fusion we must first find the heat released by the water. To do this I used the q=mc(triangle)t equation. Through my experiment I found that the mass of the water was 159.01, the specific heat capacity or the amount heat required…

current must last several milliseconds. The amount of energy delivered to the heart can be calculated by multiplying the charge on either capacitor plate, by the power supply voltage, and dividing the product by two. This value ranges from 30 - 400 Joules, depending on the necessary voltage selected by the…

Everything in the universe has one thing in common. Whether it be a piece of dust or the hubble space telescope, everything is made up of molecules. A molecule is a group of atoms bonded together and is basically the smallest fundamental unit of a chemical compound. When the temperature of these molecules heats up it creates kinetic energy which makes these molecules speed up and bounce against each other really fast. The temperature of a substance can be measured in one of three ways; Kelvin,…

Zac Sechler God defies the laws of Physics many times in the bible. One of the first examples is during the 10 plagues. The 7th plague (Exodus 9:13-35), which was a massive hailstorm. This hail needed a lot of momentum to destroy buildings. The bible said, “Give an order now to bring your livestock and everything you have in the field to a place of shelter, because the hail will fall on every man and animal that has not been brought in and is still out in the field, and they will die.” A lot of…

unit is “gray” (Gy) and “sievert” (Sv) in the international system of units (SI system). Where Gy is a physical quantity and Sv is a biological effect. 1 Gy means the deposit of 1 joule of radiation energy in 1 kg of matter or tissue (J/kg) and 1sievert represents “the equivalent biological effect of the deposit of 1 joule of radiation energy in 1 kilogram of human tissue.” (‘Sievert’, From Wikipedia). When we go to hospital and have a CT scan, the strength would increase to 16.00 mSv. The…

Aluminum extraction consumes 49x106 Joules per kilograms of Aluminum recovered and Copper recovery by the smelting operation consumes 50x106 Joules per kilogram of Copper recovered (Woollacott and Eric, 1994) [2]. Hand picking or manual sorting can be utilized to sort Zorba, but it’s a highly labor intensive slow process and it is inefficient…

surroundings to system (_____thermic) Heat transferred from system to surroundings (_____thermic) 12 Decrease - © 2006 Brooks/Cole - Thomson Chapter 6 — Thermo — Part 1 3 13 14 Example 1: If 25.0 g of Al cool from 310oC to 37oC, how many joules of heat energy are lost by the Al? Heat Transfer q = m x Cs x ∆T q = C x ∆T • • • • • q = heat absorbed or released (J) Cs = specific heat (J g-1 K-1) C = heat capacity (J K-1) m = mass of substance (g) ∆T = change in temperature…

The objective of the lab is to find the calorimeter we used by determining the heat given off from pringles and calculate how much energy was released by the burning food substance. In addition, we can also use the concept of conservation of energy that energy cannot be created or destroyed. Introduction In order to complete the snack energy lab, calorie and calorimetry will be use as a major technique. By burning pieces of food, the chemical energy stored in molecular bonds is released as heat…