Reactance: At what frequency does a 10-?F capacitor have a reactance of 0.12 k??

Fill in the blank(s) with the appropriate word(s).


0.13 kHz

Physics & Space Science

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A transverse periodic wave is represented by the equation z(y, t) = 1.50 cm sin(1,250 rad/s t + 10.0 What is the direction of the velocity of the wave?

A. the x direction B. the y direction C. the z direction D. the t direction

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Magnetic fields are produced by

a. constant electric currents. b. electric currents that vary sinusoidally with time. c. time-varying electric fields. d. all of the above. e. only (a) and (b) above.

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The law of conservation of momentum applies to a collision between two bodies since

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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?

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Physics & Space Science