PPT-Work, Energy, & Power

Chapter 4 Student Learning Objectives Compare and contrast mechanical work energy and power N ame examples of simple machines Describe renewable energy sources httpswwwyoutubecomwatchveh7uFumfvc. 4. th. form IGCSE. Chapter 17 in textbook (p. 142). Reminder: work and energy. In the back of your book:. Define what is meant by . work. . and . energy. List different . forms of energy. N.B.:. NOT fuels…. Jamie,. . Tommy, Jordan. Work. W= F(. cosθ. )d . OR. W= . FΔr. . cosθ. Work Example. A person pulls a toboggan for a distance of 35.0 m along the snow with the rope directed 25.0° above the snow. The tension in the rope is 94.0 N. (a) How much work is done on the toboggan by the tension force? (b) How much work with the same tension parallel to the snow?. 14) explain the relationship between work and power (using narrative and mathematical descriptions) and apply to realistic situations (GPS, HSGT) (SCPH_C2005-14). 14a) calculate the work on a body by constant force. In text: Ch 5. Do you already know these words?. Work – . Energy – . Power – . 2.3.1 Outline . what is meant by work.. First a demo:. One volunteer. Hold a couple of books and walk across the room.. Work . = W. The product of the force . F . applied to an object over a distance . d . in which the object travels as a result of the force. Joule . (J) . is the base unit of work. (Force and distance must be parallel to each other). AP Environmental Science. What is Energy?. Energy is a . measurable quantity. that can be stored in a physical system. Energy can be . transferred. from one system to another and so . cause changes. Homework:. Read . pages 257 – 260 . Answer questions p 261 # 1, 2, 3. P 262 #5, 6, 7, 8. Recall. :. A change in an object’s . momentum. is related to the amount of . time. a . force. acts on an object.. Worldwide efforts to reduce energy consumption. People can conserve. Large percentage savings possible, but each individual has small total impact. Industry can conserve. Larger potential impact because of scale.. What’s the difference? . Definitions. Energy . is the ability to perform work. Energy is what allows us to . do . stuff. . Power . is the rate at which energy is transformed. . 1. st. Law of Thermodynamics. Conservation of energy . Conservative and non-conservative forces. Chapter 8: Potential Energy and Conservation of Energy. Reading assignment: Ch. 8.1 to 8.5. Homework: QQ4, QQ5, AE7, AE8, AE11, 3, 6, 7, 10, 14, 15, 16, 22, 29, 40, 63. IPC Spring . 2014. Energy, Work, Power & Machines. 1. Energy. is the ability to do work. .  . Potential energy. – stored energy or energy due to position.  . PE=m g h . m. is mass (kg). g. Principles of Engineering. Work. . Work. (symbol . W. ) is the energy transferred when a force . F. is applied to an object moving through a . distance . d. .. The SI . unit of work or . energy is the joule (symbol J).. Principles of Engineering. Work. . Work. (symbol . W. ) is the energy transferred when a force . F. is applied to an object moving through a . distance . d. .. The SI . unit of work or . energy is the joule (symbol J).. People can conserve. Large percentage savings possible, but each individual has small total impact. Industry can conserve. Larger potential impact because of scale.. Datacenters are estimated to use 2 to 4% of the electricity in the United States. .