Question

a) The energy stored in gasoline is approximately 3.50×10^4 kJ per litre; 25% of this is converted into useful work by an automobile. When you drive on the highway at a constant speed, most of the work the car does is against the drag force. Assuming there is no wind, how far can the car travel on a level road at 28.2 m/s with 8 L of gasoline? The force due to air resistance is F = Dv^2, where D = 0.915 kg/m, and v is the velocity in m/s. b) If you decide to use side roads and travel at half the speed, how far can you go with the same amount of gas?

Name: 6 1pt a the energy stored in gasoline is approximately 350104 kj per litre 25 of this is converted into useful work by an automobile when you drive on the highway at constant speed most of t 33404
Uploaded: 2022-12-01T07:32:28-08:00
Duration: 4 min 16 s
Channel: Adi S
Description: 6 1pt a the energy stored in gasoline is approximately 350104 kj per litre 25 of this is converted into useful work by an automobile when you drive on the highway at constant speed most of t 33404

          a) The energy stored in gasoline is approximately 3.50×10^4 kJ per litre; 25% of this is converted into useful work by an automobile. When you drive on the highway at a constant speed, most of the work the car does is against the drag force. Assuming there is no wind, how far can the car travel on a level road at 28.2 m/s with 8 L of gasoline? The force due to air resistance is F = Dv^2, where D = 0.915 kg/m, and v is the velocity in m/s.
b) If you decide to use side roads and travel at half the speed, how far can you go with the same amount of gas?

Added by Paula L.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Adi S

12/01/2022

Step 1

The energy stored in gasoline is approximately 3.50×10^4 kJ per litre, and we have 8 litres of gasoline. So, the total energy stored in the gasoline is 3.50×10^4 kJ/L * 8 L = 2.80×10^5 kJ. However, only 25% of this energy is converted into useful work by the Show more…

Show all steps

Thanks for your feedback!

a) The energy stored in gasoline is approximately 3.50×10^4 kJ per litre; 25% of this is converted into useful work by an automobile. When you drive on the highway at a constant speed, most of the work the car does is against the drag force. Assuming there is no wind, how far can the car travel on a level road at 28.2 m/s with 8 L of gasoline? The force due to air resistance is F = Dv^2, where D = 0.915 kg/m, and v is the velocity in m/s. b) If you decide to use side roads and travel at half the speed, how far can you go with the same amount of gas?