A steel pipe (E 5 190 GPa, ? 5 14 3 1026/°C, d2 5 82 mm, and d1 5 70 mm) of length L 5 4.25 m hangs from a rigid surface and is subjected to a temperature increase ¢T 5 50 °C. The column is fixed at the top and has a small gap at the bottom. To avoid buckling, the mini-mum clearance at the bottom should be approximately:
(A) 2.55 mm
(B) 3.24 mm
(C) 4.17 mm
(D) 5.23 mm
(A) 2.55 mm
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_________corrosion is intense, localized corrosion that occurs when a material has areas of restricted exposure to an electrolyte.
Fill in the blank(s) with the appropriate word(s).
An atom consists of
A. negatively charged protons in a nucleus orbited by positively charged electrons. B. positively charged protons in a nucleus orbited by negatively charged neutrons. C. electrons in a nucleus orbited by protons. D. None of these choices are correct.
A 120. mH inductor is in series with a 20. ? resistor and a variable capacitor (0.110 ?F to 0.400 ?F)
(a) What is the range of resonant frequencies possible? (b) Connected to a 24. volt rms source, what current flows at resonance?
The Hope Diamond weighs 44.5 carats, and there are 200 mg per carat. What is the mass of the Hope Diamond in kilograms?
A) 0.000890 kg B) 0.00890 kg C) 0.0890 kg D) 0.890 kg E) 8.90 kg