A nucleus of radium-223 undergoes alpha decay. (a) Write the reaction equation and (b) determine the identity of the daughter nucleus
(a) 22388Ra ? 11986Rn + 42He, (b) radon
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For an observer on Uranus, the ecliptic passes only a few degrees from the celestial poles
Indicate whether the statement is true or false
Entropy: What is the change in entropy of the ice when a 0.050-kg ice cube at 0°C melts? The latent heat of fusion for water is 80 cal/g.
Fill in the blank(s) with the appropriate word(s).
A long, straight wire (radius = 2.0 mm) carries a current of 2.0 A distributed uniformly over a cross section perpendicular to the axis of the wire. What is the magnitude of the magnetic field at a distance of 1.0 mm from the axis of the wire?
A. 0.40 mT B. 0.80 mT C. 0.10 mT D. 0.20 mT E. 0.75 mT
The term "solid-state electronics" refers to
A. the replacement of positive charges with electrons in devices. B. the increased use of metals in electronic devices. C. our ability to now use solids to make electronic devices. D. the use of transistors rather than vacuum tubes.