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rene i1) Explain why oil is described as a non 13. Fossil fuels are used in the generation of electricity, but over hal Biomass i What is Biomass? ii. Biomass and fossil fuels are all energy resources, what is the origin of these resources windmill is given by the equation

rene i1) Explain why oil is described as a non 13. Fossil fuels are used in the generation of electricity, but over hal Biomass i What is Biomass? ii. Biomass and fossil fuels are all energy resources, what is the origin of these resources windmill is given by the equation

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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13. in the of but the uses ii) oil is as a energy source. ii. Biomass and fossil fuels are all what is the origin of these resources Biomass i. What is Biomass? 14. The power derived from a windmill is given by the equation er - generator is of diameter 0.6 m and given that the efficiency of the system is 25% at a wind speed of 13.5 ms! P. o p is the average air density, A, the area of the blade and v, the speed of wind; one such 1) Calculate the power output of the aero – generator. Assume that the average air density ja 1.2 kgm3 11) Why is the efficiency of the system less than 40%? 11) State and explain one environmental impact depletion of the ozone layer. iv) Name two greenhouse gases 15. a) Distinguish between renewable and non - renewable energy sources, giving an example of cach b) A solar panel delivers power at the rate of 2.0 kW, when the rays of the Sun fall normally on it. If the solar constant is 1.2 x 10 Wm2 and its efficiency is only 40%. Calculate the area of the solar panel? 16. a) Explain why Cameroon cannot rely on solar energy for its energy needs b) Draw and energy flow diagram for a scheme for which wood is burnt to produce electrical energy. 17. i) A small ship called "THE ESPANGNOLA" needs to enter and berth the Kribi deep sea port in Cameroon. What does the ship captain and his crew need to know about the weather of Kribi? ii) Explain how weather forecasting can be done at a distance? 18. a) Draw a cross-section of a hydro-electric power plant. b) Explain the energy changes that take place in the plant. 19. Figure 1.11 is an example of a solar panel. Study the diagram carefully and answer the questions that follow. Sun's Radiations Glass Blackened Pipes Figure 1.11 Explain why the solar panel has the following features. a) The pipes are blackened b) The top of the panel is covered with glass. c) The walls are highly insolated and blackened
Transcribed Image Text:13. in the of but the uses ii) oil is as a energy source. ii. Biomass and fossil fuels are all what is the origin of these resources Biomass i. What is Biomass? 14. The power derived from a windmill is given by the equation er - generator is of diameter 0.6 m and given that the efficiency of the system is 25% at a wind speed of 13.5 ms! P. o p is the average air density, A, the area of the blade and v, the speed of wind; one such 1) Calculate the power output of the aero – generator. Assume that the average air density ja 1.2 kgm3 11) Why is the efficiency of the system less than 40%? 11) State and explain one environmental impact depletion of the ozone layer. iv) Name two greenhouse gases 15. a) Distinguish between renewable and non - renewable energy sources, giving an example of cach b) A solar panel delivers power at the rate of 2.0 kW, when the rays of the Sun fall normally on it. If the solar constant is 1.2 x 10 Wm2 and its efficiency is only 40%. Calculate the area of the solar panel? 16. a) Explain why Cameroon cannot rely on solar energy for its energy needs b) Draw and energy flow diagram for a scheme for which wood is burnt to produce electrical energy. 17. i) A small ship called "THE ESPANGNOLA" needs to enter and berth the Kribi deep sea port in Cameroon. What does the ship captain and his crew need to know about the weather of Kribi? ii) Explain how weather forecasting can be done at a distance? 18. a) Draw a cross-section of a hydro-electric power plant. b) Explain the energy changes that take place in the plant. 19. Figure 1.11 is an example of a solar panel. Study the diagram carefully and answer the questions that follow. Sun's Radiations Glass Blackened Pipes Figure 1.11 Explain why the solar panel has the following features. a) The pipes are blackened b) The top of the panel is covered with glass. c) The walls are highly insolated and blackened
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