Three devices that use electromagnetic induction in their operation are generators, transformers, and dynamic microphones

a. True
b. False
Indicate whether the statement is true or false


True

Physics & Space Science

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The ____ is the point on the celestial sphere directly above any observer.

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

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In the STM, what are the S and T?

a. scattering, transparent c. standard, transmission b. superconducting, trans-barrier d. scanning, tunneling

Physics & Space Science

What is the maximum radiation pressure exerted by sunlight in space (S = 1350 W/m2) on a flat black surface?

a. 2.25 × 10^?5 Pa b. 0.06 Pa c. 7 × 10^?4 Pa d. 4.5 × 10^?6 Pa e. 9.0 × 10^?6 Pa

Physics & Space Science

At atmospheric pressure, 45 moles of liquid helium are vaporized at its boiling point of 4.22 K. The heat of vaporization of helium, at atmospheric pressure, is 2.09 × 104 J/kg,

and the atomic weight of helium is 4.00 g/mol. The change in the entropy of the helium, as it vaporizes, is closest to A) 890 J/K. B) 14,000 J/K. C) 18,000 J/K. D) -9400 J/K. E) -14,000 J/K.

Physics & Space Science