2. During the lectures we have compared various forms of transportation using the units of kWh per passenger 100 km. In

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2 During The Lectures We Have Compared Various Forms Of Transportation Using The Units Of Kwh Per Passenger 100 Km In 1 (163.6 KiB) Viewed 34 times

2. During the lectures we have compared various forms of transportation using the units of kWh per passenger 100 km. In particular, we saw that the total power consumed by the engine of a vehicle (car, train, airplane, etc) is given by: P= p - Goredra) where p is the air density (1.29 kg/m?); CD, A, and V are the drag coefficient, frontal area and velocity of the vehicle, respectively: n is the efficiency of the engine. 1 Build a table to compare the energy consumption per person per 100 km for a) A gasoline car with one driver with velocity V = 115 km/h, cp=0.36, A = 4.0 m² and n = 0.29 (3 pts) b) A small gasoline van with one driver and seven passengers with velocity V = 115 km/h, CD=0.36, A = 4.0 m- and n = 0.29 (3 pts) c) A small electric car with one driver and one passenger with velocity V = 90 km/h, cp=0.35, A = 2.0 m- and n=0.9 (3 pts) d) A train with two drivers and 260 passengers with velocity V = 360 km/h, cp=0.6, A = 9 m- and n = 0.85 (3 pts) e) A tandem bicycle with one cyclist and one passenger, velocity V = 20 km/h, cd= 0.9. A=0.8 m- and n=0.35 (3 pts) Question n CD A (m) V (km/h) a 0.29 0.36 4 115 b 0.29 0.36 4 115 c 0.9 0.35 2 90 d 0.85 0.6 9 360 0.35 0.9 0.8 20 Which one of the 5 options, the one that consumes the most energy. (5 pts) Can you assess which option is better suited for long distance travel? (5 pts)