Believe it or not‚ this is determined by just three camera settings: aperture‚ ISO and shutter speed (the "exposure triangle"). Mastering their use is an essential part of developing an intuition for photography. UNDERSTANDING EXPOSURE Achieving the correct exposure is a lot like collecting rain in a bucket. While the rate of rainfall is uncontrollable
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Pmech is the mechanical power ρ is the air density R is the turbine’s radius v is the wind speed Cp is the power coefficient λ is the tip speed ratio Ѳ is the pitch angle λ is defined as: where ωm is the turbine rotation speed R is the turbine’s radius v is the wind speed The
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(distance = speed X time) Upstream: 60 = 6(b-c) Downstream: 60 = 3(b+c) There are now two separate equations: 60 = 6b - 6c and 60 = 3b + 3c Solve both equations for b: b = 10 + c b = 10 - c Now make both equations equal each other and solve for c: 10 + c = 10 - c 2c = 0 c = 0 The speed of the current was 0 mph Now‚ plug the numbers into one of either the original equations to find the speed of the boat in still water. I chose the first equation: b = 10 + c or b = 10 + 0 b = 10 The speed of the
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Leased Lines Below what speed are there different leased line standards in different parts of the world? In the text “Business data networks and telecommunications” the author points out that leased lines vary worldwide from 56 kbps to several gigabits per second‚ depending on the technology used. The lowest speeds of these leased lines are 56 or 64 kbps in the United States‚ and 64 kbps in Europe. These speeds are comparable to modem speeds and are rarely installed. The typical wiring for these
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and average speed. Solution: Driving time for 1500 mile trip with an average speed of 60 mile per hour is 25 hours and that with an average speed of 75 mile per hour is 20 hours. Answer: Driving time for 1500 mile trip with an average speed of 60 mile per hour is 25 hoursand that with an average speed of 75 mile per hour is 20 hours. Explanation: Given: Trip Distance = 1500 miles "Trip Distance =1500 miles" "Average speed = 60 mile per hour and 75 mile per hour " Average speed = 60 mile per
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Advertising Regulation The strength of the self-regulatory system lies in both the independence of the ASA and the support and commitment of the advertising industry‚ through the Committee of Advertising Practice (CAP)‚ to maintaining the high standards laid down in the Advertising Codes‚ which are designed to protect consumers. Today‚ the UK advertising regulatory system is a mixture of * Self-regulation for non-broadcast advertising * Co-regulation for broadcast advertising. The ASA
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ENERGY AND MOLECULAR SPEEDS Molecules of gases remain in continuous motion. While moving they collide with each other and with the walls of the container. This results in change of their speed and redistribution of energy. So the speed and energy of all the molecules of the gas at any instant are not the same. Thus‚ we can obtain only average value of speed of molecules. If there are n number of molecules in a sample and their individual speeds are u1‚ u2‚ …….un‚ then average speed of molecules uav can
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designed so that when the rim runs at ½ the speed of the water jet‚ and therefore the water is leaves with little energy. Apparatus: Pelton wheel and stopwatch. Figure 1. Pelton wheel machine Procedures: 1.) The pelton wheel machine is fully set up already. 2.) Now turn on the main power supply and start the pump. 3.) The nozzle jet is preset at fully opened position. The water shot from the nozzle caused the wheel to rotate. 4.) The speed is first set at 1200 rpm and then the
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The generator arrangement may include a speed-increasing gearbox or belt-drive and/or a power electronic frequency converter. See also the Appendix: Background information on induction generators. 7.1 Fixed-speed induction generator Many modern wind turbines (especially those manufactured during the 1990s) use a four-pole induction generator‚ which is directly connected to the grid and therefore runs at an almost constant speed: a little over 1500 rpm. A speed-increasing gearbox is used to couple
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with the speed of light‚ I noticed that the light being refracted was slower when it shined through a denser medium. For example when the higher medium was water and we were comparing it to air‚ the speed of the light being refracted was 0.75 c. If we were to switch the medium to glass‚ which is more dense than water‚ the speed of the light decreased to 0.67 c. For two of the mediums they were both placed at the same angle when we started shining the light and as the outcome‚ the speed decreased
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