4) u 57% D Sun May 7 1027 34 PM C MasteringPhysics: Chapter 15 Homework a secure

Question

4) u 57% D Sun May 7 1027 34 PM C MasteringPhysics: Chapter 15 Homework a secure https://session masteringphysics.com/myct/itemviewmassignmentProblem 78157053. ID Spring 2017 Help Cos ChasinL15 Homework Problem 15.66 e previous I 18 of 20 I next Part A Find the pressure diffi on an airplane wingifairnows over the upper surface with a speed of 127 m/s, and along the bottom surface with a speed of 106 m/s. AP 29.6 kPa Submit My Answers Give Up Incorrect; Try Again; 3 attempts remaining Part B the area of the wing is 31 m what is the net upward force exerted on the wing? Expeps your answer using two significant figures. F- 917.6 Submit Answers give up Incorrect Try Again: 5 attempts remaining My organizations MacBook Air

Explanation / Answer

Here ,
part A)

p = 1.21 Kg/m^3

v1 = 127 m/s

v2 = 106 m/s

difference in pressure = 0.50 * p * (v1^2 - v2^2)

difference in pressure = 0.50 * 1.21 * (127^2 - 106^2)

difference in pressure = 2960 Pa = 2.96 kPa

the difference in pressure is 2.96 kPa

b)

area , A =31 m^2

net upwards force = area * pressure

net upwards force = 31 * 2960

net upwards force = 91760 N

net upwards force = 91.8 kN

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