A steel pipe (d3 5 104 mm, d2 5 96 mm) has a plastic liner with inner diameter d1 5 82 mm. The modulus of elasticity of the steel is 75 times that of the modulus of the plastic. Allowable stresses in steel and plastic are 40 MPa and 550 kPa, respectively. The allowable bending moment for the composite pipe is approximately:
(A) 1100 N?m
(B) 1230 N?m
(C) 1370 N?m
(D) 1460 N?m
(B) 1230 N?m
Physics & Space Science
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A large substitutional atom is attracted to the region of an edge dislocation that has _________strains.
Fill in the blank(s) with the appropriate word(s).
Physics & Space Science
A ball rolls down an incline, starting from rest. If the total time it takes to reach the end of the incline is T, how much time has elapsed when it is halfway down the incline?
a. 0.5 T b. < 0.5 T c. > 0.5 T d. More information is needed.
Physics & Space Science
You see colors in a rainbow because of
a. interference b. diffraction c. specular reflection d. dispersion e. polarization
Physics & Space Science
If we represent the Milky Way Galaxy as the size of a grapefruit, the distance to the Andromeda Galaxy would be about
A) 3 cm. B) 3 km. C) 30 m. D) 3 m. E) 300 km.
Physics & Space Science