Polls and quizzes are examples of animated content.
Answer the following statement true (T) or false (F)
False
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Molar Specific Heats: A rigid container is filled with 4.0 mol of air with CV = 2.5R. How much does the internal (thermal) energy of the air change if its temperature rises from 18°C to 448°C? (R = 8.31 J/mol ? K)
A. 35,800 J B. 430 J C. 3580 J D. 8940 J
A very large sheet of a conductor carries a uniform charge density of 4.00 pC/mm2 on its surfaces. What is the electric field strength 3.00 mm outside the surface of the conductor? (?0 = 8.85 × 10-12 C2/N ? m2)
A) 4.52 × 105 N/C B) 2.26 × 105 N/C C) 9.04 × 105 N/C D) 0.226 N/C E) 0.452 N/C
A current of 5 A is flowing in a 20 mH inductor. The energy stored in the magnetic field of this inductor is
A) 1 J. B) 0.25 J. C) 0.50 J. D) 0. E) dependent upon the resistance of the inductor.
The earliest evidence of ancient life, blue-green algae, are
a. cyanobacteria. b. amber. c. foraminifera. d. coal.