10th EditionR.C. Hibbeler1,670 explanations

6th EditionCharles Alexander, Matthew Sadiku2,102 explanations

2nd EditionAlan S. Willsky, Alan V. Oppenheim, S. Hamid665 explanations

9th EditionYunus A. Cengel2,611 explanations

ENGINEERINGAdvertisement signs are commonly carried by taxicabs 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 taxicab 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 0.72 kg/L, $1.10/L, and 42,000 kJ/kg, respectively, and the density of air to be$1.25 $\mathrm{kg}$ / $\mathrm{m}$^{3}.$