2.20 The drag force, Fa, imposed by the surrounding air on a vehicle moving with velocity V is given by F₁ = C₁A=pV² where C₁ is a constant called the drag coefficient, A is the projected frontal area of the vehicle, and p is the air density. Determine the power, in hp, required to overcome aerodynamic drag for an automobile moving at (a) 25 miles per hour, (b) 70 miles per hour. Assume C₁ = 0.28, A = 25 ft², and p = 0.075 lb/ft².

2.20 The drag force, Fa, imposed by the surrounding air on a vehicle moving with velocity V is given by F₁ = C₁A=pV² where C₁ is a constant called the drag coefficient, A is the projected frontal area of the vehicle, and p is the air density. Determine the power, in hp, required to overcome aerodynamic drag for an automobile moving at (a) 25 miles per hour, (b) 70 miles per hour. Assume C₁ = 0.28, A = 25 ft², and p = 0.075 lb/ft².

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

2.20 The drag force, Fa, imposed by the surrounding air on a
vehicle moving with velocity V is given by
F₁ = C₁A=pV²
where C₁ is a constant called the drag coefficient, A is the
projected frontal area of the vehicle, and p is the air density.
Determine the power, in hp, required to overcome aerodynamic
drag for an automobile moving at (a) 25 miles per hour,
(b) 70 miles per hour. Assume C₁ = 0.28, A = 25 ft², and p
0.075 lb/ft².

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