Ohm's Law: The graph shown in the figure shows the results of measurements of the dc current through a circuit device for various potential differences across it. Assume that all the numbers shown are accurate to two significant figures. What is the resistance of this device?
Fill in the blank(s) with the appropriate word(s).
2.0 ?
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For the following acid-base reaction, identify what is formed in the space marked
HF + KOH ? ???? + H2O A) KF B) H3OF C) KOH2 D) KOH2F E) none of the above
For normal household temperatures, a comfortable relative humidity is
a. 100% b. 0% c. 25% d. 50%
By what factor is the capacitance of a metal sphere multiplied if its volume is tripled?
1.3 2.31/3 3.1 4.3-1/3 5.13
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