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One type of commercial smoke detector contains a minute amount of radioactive americium-241 (241Am), which decays by -particle production. The particles ionize molecules in the air, allowing it to conduct an electric current. When smoke particles enter, the conductivity of the air is changed and the alarm buzzes.
a. Write the equation for the decay of 241 95Am by -particle production.
b. The complete decay of 241Am involves successively , , , , , , , , , , , and production. What is the final stable nucleus produced in this decay series?
c. Identify the 11 intermediate nuclides.
Repeat Problem 4.2.9 for a delta-connected set of capacitors with a per-phase reactance of -j60 Ω connected in parallel with the load, and compare the result with that obtained in Problem 4.2.9.
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Assume that an ordinary mercury-in-glass thermometer follows first order dynamics with atime constant of 10s. It is at a steady state temperature of 0°C. At time t = 0, the ther mometeris suddenly immersed in a constant temperature bath at 100°C.
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air at 4mpa and 3000c enters a will insulated turbine operating at steady state with negligible velocity. the air
Radioactive copper-64 decays with a half-life of 12.8 days. a. What is the value of k in s^-1? b. A sample contains 28.0 mg 64Cu. How many decay events will be produced in the first second?
One of the major categories of assistive devices is alternative and augmentative communication devices. Describe the electronic data processing steps needed for text-to-speech conversion. How have the technological advances in personal computing m..
Does the current through the battery increase, decrease, or remain the same? Justify your answer.
Is the resulting solution neutral? If not, calculate the concentration of excess H or OH ions left in solution.
Problem: A 500mm conductor inside an electric motor has a force of 1.5 newtons exerted on it. If it is at right angles to a magnetic field of flux density 0.6 T, calculate the current flowing in the conductor.
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