What is the impedance of an ac series circuit with 12.0 ? of resistance, 15.0 ? of inductive reactance, and 10.0 ? of capacitive reactance?

A) 21.9 ? B) 13.0 ? C) 11.6 ? D) 27.7 ?


B

Physics & Space Science

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Light bulb A is rated at 60 W and light bulb B is rated at 100 W. Both are designed to operate at 110 V. Which statement is correct?

a. The 60 W bulb has a greater resistance and greater current than the 100 W bulb. b. The 60 W bulb has a greater resistance and smaller current than the 100 W bulb. c. The 60 W bulb has a smaller resistance and smaller current than the 100 W bulb. d. The 60 W bulb has a smaller resistance and greater current than the 100 W bulb. e. We need to know the resistivities of the filaments to answer this question.

Physics & Space Science

What are the benefits of living near a volcano?

What will be an ideal response?

Physics & Space Science

A nonprismatic cantilever bar has an internal cylindrical hole of diameter d/2 from 0 to x, so the net area of the cross section for Segment 1 is (3/4)A. Load P is applied at x, and load 2P/2 is applied at x 5 L. Assume that E is constant. The length of the hollow segment, x, required to obtain axial displacement ? 5 PL/EA at the free end is:

(A) x 5 L/5
(B) x 5 L/4
(C) x 5 L/3
(D) x 5 3L/5

Physics & Space Science

The Himalayan Mountains formed at which type of plate boundary?

A) transform—fault boundary B) Oceanic—continental convergent boundary C) divergent boundary D) continental—continental convergent boundary

Physics & Space Science