A copper tube with wall thickness of 8 mm must carry an axial tensile force of 175 kN. The allowable tensile stress is 90 MPa. The minimum required outer diameter is approximately:

(A) 60 mm

(B) 72 mm

(C) 85 mm

(D) 93 mm


(C) 85 mm

Physics & Space Science

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The last page of a book is numbered 764 the book is 3.0 cm thick not including its covers. What is the average thickness in centimeters of a page in the book rounded to the proper number of significant figures

A) 0.0039 cm
B) 0.072 cm
C) 0.0079 cm
D) 0.00393 cm
E) 0.00785 cm

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Open clusters and young stars are generally found only in the disk of the galaxy and not in the halo

Indicate whether the statement is true or false

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The globular star clusters are the most obvious examples of Population II around us

Indicate whether the statement is true or false

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The major moons of ______________ were named after literary characters

Fill in the blank(s) with correct word

Physics & Space Science