Two pipe columns are required to have the same Euler buckling load Pcr. Column 1 has flexural rigidity EI and height L1; column 2 has flexural rigidity (4/3) EI and height L2. The ratio (L2/L1) at which both columns will buckle under the same load is approximately:
(A) 0.55
(B) 0.72
(C) 0.81
(D) 1.10
(C) 0.81
Physics & Space Science
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The velocity required to escape an astronomical body is known as the _______________
Fill in the blank(s) with correct word
Physics & Space Science
Two unknown resistors are connected together. When they are connected in series their equivalent resistance is 15 ?. When they are connected in parallel, their equivalent resistance is 3.3 ?. What are the resistances of these resistors?
What will be an ideal response?
Physics & Space Science
A stable electron orbit cannot exist if its circumference is
A) a single wavelength. B) 2 wavelengths. C) 2.5 wavelengths. D) any of the above E) none of the above
Physics & Space Science
The point in Earth's orbit where Earth is farthest from the Sun is known as
a. aphelion. b. perihelion. c. precession. d. the winter solstice. e. a and d.
Physics & Space Science