He placed the his temperature scale at o degree for the boiling point, and ent downward and placed the freezing point at 100 degrees 10. What did the physicist Amonton contribute to the understanding of hot and cold? Amonton was doing heating, and cooling experiments. He saw that when he cooled the object that when the temp dropped so did the pressure. So he thought what would happen if you kept pushing the pressure back.
Dr Khounsary explains an experiment using a fixed voltage and varying the temperature of the wire using a torch. The article further explains that the temperature coefficient of copper at 20 degrees C is .00393 and that a single degree of temperature change would increase the resistance of the wire by that amount. In the article regarding the Effect of Temperature on Conductivity (The Nuffield Foundation, 2006) the article describes how the conductivity of a wire decreases as it is heated. It provides an example schematic diagram for the test circuit and the use of Eureka wire instead of copper wire. A2a.
Based on your data, what effect do you predict coal mining has on the environment? Answer = 4. What can be done to prevent mine drainage from damaging the ecosystem? Utilize at least one scholarly resource to support your suggestions. Answer = Experiment 2: Solar Energy Table 2: Solar Energy Experiment Results | Environmental Descriptor/Variable | Observations(Each should be compared against direct subnlight) | Weather of the Day | | Motor speed in direct sunlight | | Motor speed at 45 degree angle | | Motor speed under reflectors | | Motor speed with 25% shaded | | Motor speed with 50% shaded | | Motor speed with 75% shaded | | Motor speed under red filtration | | Motor speed under blue filtration | | Motor speed under green filtration | | Motor speed under yellow filtration | | Post-Lab Questions 1.
[pic] Requirements Must have a nameplate capacity of no more than 100 kilowatts. Tax Credit includes installation costs. More Information ▪ How to apply • Solar Energy Systems o Solar Water Heaters [pic]Solar water heaters come in a wide variety of designs, all including a collector and storage tank, and all using the sun's thermal energy to heat water. Solar water heaters are typically described according to the type of collector and the circulation system. [pic]
PHYS 222 Worksheet 5 – Electric Potential Supplemental Instruction Iowa State University Useful Equations Leader: Course: Instructor: Date: Alek Jerauld PHYS 222 Dr. Paula Herrera-Siklódy 1/24/12 Wab (Ub U a ) qq U k 0 r q U kq0 i i ri U q V k q0 r q V k i i ri dq V k r Work done by a conservative force Electric potential energy by two point charges q and q0 Potential energy of charge q0 due to the collection of charges qi Potential due to a point charge. Units: [ 1 V = 1 volt = 1 J/C] Potential due to a collection of point charges Potential due to a continuous distribution of charge Potential difference as an integral of E E in terms of V. E is the gradient of V. Vb Va E dl a b E V Diagrams
Andrea Gurke #8 Period 3 Chem Traditional Chem Unit 10- Thermodynamics- Book chapter 10 Objective Objective 1- Can define and distinguish between heat and temperature Temperature: measure of random motion (average kinetic energy) of components in a substance Heat: Flow of energy due to a temperature difference Temperature | Heat | How fast atoms are moving | Amount of energy | Measure of avg. kinetic energy | Flow of energy due to temperature difference | Measure of amount of energy | Form of energy | Speed limit | | Objective 2- Can define Specific heat capacity Specific Heat- Amount of energy it takes to change temperature of a substance by 1 degree Celsius Low Specific heat= LESS time to heat up/cool down= less energy High specific heat= MORE time to heat up/cool down= more energy Formula = Q= SxMx▲T Objective 3- Can perform simple calculations using the calorimetry equation (q=sm▲t) Q=1251 J Q= SxMx▲T S=X 1251 J= (x)(35.2)(25) M=35.2 g 1251/880=880x T1= 0 degree C 1.42 g/J T2=25 degree C Objective 4- Can perform complex calculations using the law of conservation of energy | metal | water | S (J/ degrees C) | ? | 4.184 | Mass | 75025 | 100 | Ti | 99.3 | 22.4 | Tf | 32.9 | 32.9 | Q= SxMx▲T Qmetal+Qwater=0 Q= -Q metal | water | SxMx▲T | -(SxMx▲T) | S(75.25 g) (32.9-99.3) | -(4.184)(100)(32.9-22.4) | S(-4996.3) | -(4393.2) | S= | .879 | Objective 5- Understand endothermic and exothermic processes, including their definitions and values of enthalpy Exothermic= process when energy (as heat) flows OUT OF THE SYSTEM Ex: ice freezing Endothermic= process when energy (as heat) flows INTO THE SYSTEM Ex: boiling of water
Exothermic and endothermic reactions. First law of thermodynamics and enthalpies of reactions. Calculate standard enthalpies of formations (using the equation on page 191). Electromagnetic radiation, photoelectric effect and continuous and line spectra. Energy levels and electron configurations (including representation using orbital diagrams) of several common elements on the periodic table.
6 CO2 + 6 H2O + solar energy --> C6H12 + 6 O2 6) Be able to understand what the radish experiment shows us about photosynthesis. 7) How does light energy convert to chemical energy? Photons absorbed by chlorophyll Electron move to higher energy state Chlorophyll transfers electron to other molecule Chlorophyll can then accept an electron (from water) The energy gained by photo-excitation of chlorophyll is used to synthesize ATP This energy is then used to synthesize carbohydrates 8) Be able to recognize the formula for the reaction of respiration. C6H12O6 + 6 O2 6 CO2 + 6 H2O + energy 9) What is the difference between aerobic and anerobic respiration? 10) What is an energy pyramid and what does it represent?
Jamarquis Green Written Assignment General Biology 4/13/14 1. Light is a form of energy known as electromagnetic energy it travels through rhythmic waves, the distance between the crests that become formed are called wavelengths these wavelengths range from less than a nanometer which is equivalent to a gamma ray which humans can’t visibly see too more than a kilometer which equivalent to radio waves the entire range of radiation is known as the electromagnetic spectrum which measures light. In plants light energy is used to convert solar energy into chemical energy what this means is that the heat from the light causes the plant to undergo different changes due to the heat that it has absorbed. Also light energy contains ample amounts
Web. 10 Aug. 2013. McKenzie, Lisa. "Human Health Risk Assessment of Air Emissions from Development of Unconventional Natural Gas Resources." Science of Total Environment, 15 Sept. 2011.