Reaction forces are given in terms of load variable P for the truss below (see boxed expressions next to reaction force arrows). The force in member FD is:
(A) 1.76P
(B) 21.76P
(C) 22.14P
(D) 24.24P
(C) 22.14P
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Thermoset polymers _________be melted for processing or recycling.
Fill in the blank(s) with the appropriate word(s).
Explain the two sources of heat that "melted" a planet during its formation
What will be an ideal response?
A steel plane truss is loaded at B and C by forces P 5 200 kN. The cross-sectional area of each member is A 5 3970 mm2. Truss dimensions are H 5 3 m and L 5 4 m. The maximum shear stress in bar AB is approx- imately:
(A) 27 MPa
(B) 33 MPa
(C) 50 MPa
(D) 69 MPa
The following set of redox reactions takes place when iron is dipped in a solution of copper ions
Fe ? Fe+2 + 2e- Cu+2 + 2e- ? Cu Which of the following describes what is happening on the surface of the iron? A) The copper starts to plate out on iron. B) The iron rusts in the water. C) The iron starts to plate out on the copper. D) The iron corrodes the copper. E) none of the above