Answer to Question #211460 in Physics for Humam

Question

2- The aerodynamic drag of a new sports truck is to be predicted at a speed of 50.0 km/h at an air temperature of 25 degrees * C . Automotive engineers build a one- sixth scale model of the car to test in a wind tunnel. It is winter and the wind tunnel is located in an unheated building; the temperature of the wind tunnel air is only about 10 degrees * C . Determine how fast the engineers should run the wind tunnel in order to achieve similarity between the model and the prototype , if the drag sensor read 80 N fine the drag force exerted on prototype . Properties for air at atmospheric pressure and T = 25 degrees * C , p = 1.184kg / cm3 and mu=1.849^ * 10^ ^ -5kg/m.s , similarity at T = 10 degrees * C; p=1.22 kg/cm3 and mu=1.792^ * 10^ ^ -5kg/m.s .

Answer 1

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