Advertisement signs are commonly carried by taxi- cabs for additional income, but they also increase the fuel cost. Consider a sign that consists of a 0.30-m-high, 0.9-m-wide, and 0.9-m-long rectangular block mounted on top of a taxi- cab such that the sign has a frontal area of 0.3 m by 0.9 m from all four sides. Determine the increase in the annual fuel cost of this taxicab due to this sign. Assume the taxicab is driven 60,000 km a year at an average speed of 50 km/h and the overall efficiency of the engine is 28 percent. Take the density, unit price, and heating value of gasoline to be 0.75 kg/L, $0.50/L, and 42,000 kJ/kg, respectively, and the density of air to be 1.25 kg/m3.

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Q: A stiff, square, thick rubber plate (m = 502 g) sits on the round mouth of a jar, completely…

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Q: What is the power output for a 62.0-kg woman who runs up a 3.20m high flight of stairs in 4.00s,…

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Q: A walnut with a mass of 50 g requires a force of 200 N applied continuously for 0.002 s to be…

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Q: A chair lift is to be installed from the surface down to a depth of 150 m. The inclination is 17…

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Q: The fan used to circulate air within a large industrial building is shown in The blade assembly of…

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Q: Solar ponds are small artificial lakes of a few meters deep that are used to store solar energy. The…

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Q: In absence of friction and air drag an object is sliding with constant velocity. The net force…

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Q: Does it take more, equal, or less power for a helicopter to hover at the top of a high mountain than…

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Q: The escalator steps move with a constant speed of 0.6 m/s. If the steps are 125 mm high and 250 mm…

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Q: AO A sphere of volume 0.025 m3 and density 250 kg/m³ is initially at position A, 30 cm under the…

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Q: A stone of 20 kg mass and a tank containing 200 kg water comprise a system. The stone s. 15 m above…

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Q: The contractor is instructed to achieve a compacted field dry unit weight of 90% of the maximum dry…

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Q: lOCk oT WOOd has a mass of 3.90 kg and a densityof 548 kg/mº. It is to be lIoaded with lead (1.13…

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Q: 1. As part of your role at a heavy-goods vehicle manufacturer, you have been asked to determine the…

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Fluid Dynamics

The study of the flow of gases and liquids, usually in and around solid surfaces, is known as fluid dynamics in physics and engineering. Fluid dynamics, for example, can be used to evaluate the movement of air through an airplane wing or the surface of a vehicle. It can also be used in ship design to increase the speed at which ships pass through water.