THE INTEGRATED DRAG FORCE (IN N) ON THE PLATE, BETWEEN P − S , IS

83. The integrated drag force (in N) on the plate, between p − s , is:

(A) 0.67

(B) 0.33

(C) 0.17

(D) zero

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Statement for Linked Answer Questions 84 & 85:

Consider a PERT network for a project involving six tasks (a to f).

Task Predecessor Expected task time (in days) Variance of the task time (in days

2

)

a - 30 25

b a 40 64

c a 60 81

d b 25 9

e b, c 45 36

f d, e 20 9