In a typical transmission line, the current I is very small and the voltage V is very large. A unit length of line has resistance R. For a power line that supplies power to 10,000 households, we can conclude that
a. IV = I 2R.
b. I = V/R.
c. IV < I 2R.
d. IV > I 2R.
e. I 2R = 0.
d
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Bulk Modulus: A 12-L volume of oil is subjected to pressure which produces a volume strain of -3.0 × 10-4. The bulk modulus of the oil is 6.0 × 109 Pa and is independent of the pressure. The reduction in the volume of the oil in milliliters is closest to
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Charge of a uniform density (8.0 nC/m2) is distributed over the entire xy plane. A charge of uniform density (5.0 nC/m2) is distributed over the parallel plane defined by z = 2.0 m. Determine the magnitude of the electric field for any point with z = 1.0 m.
A. 0.45 kN/C B. 0.17 kN/C C. 0.28 kN/C D. 0.73 kN/C E. 0.62 kN/C
The energy gap between the valence and conduction bands in a certain semiconductor is 1.25 eV. What is the threshold wavelength for optical absorption in this substance?
A) 599 nm B) 639 nm C) 959 nm D) 873 nm E) 995 nm
__________ is the concentration of natural drainage channels in a given area.
What will be an ideal response?