Sustainable Energy
2nd Edition
ISBN: 9781337551663
Author: DUNLAP, Richard A.
Publisher: Cengage,
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Chapter 5, Problem 6P
To determine
Find the energy released during the
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Chapter 5 Solutions
Sustainable Energy
Ch. 5 - Prob. 1PCh. 5 - Prob. 2PCh. 5 - A sample of 137Cs (half-life = 30.1 years) decays...Ch. 5 - Prob. 4PCh. 5 - What are the decay products of the decay of the...Ch. 5 - Prob. 6PCh. 5 - Nuclide A has a half-life of 4 days, and nuclide B...Ch. 5 - 64Cu can decay by both decay and + decay. Draw an...Ch. 5 - At time t = 0 a sample contains 3.57 108 nuclei...Ch. 5 - Prob. 10P
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- The measured decay rates of a radioactive material as a function of time are shown in the table below. (a) Calculate the half-life of the decay. (b) Show that a semilogarithmic plot of the decay rate as a function of time is linear. (c) Derive an analytical form of the linear relationship for part (b).arrow_forwardThe nucleus of an atom can be modeled as several protons and neutrons closely packed together. Each particle has a mass of 1.67 x 1027 kg and radius on the order of 10-15 m. (a) Use this model and the data provided to estimate the density of the nucleus of an atom. (b) Compare your result with the density of a material such as iron (p = 7874 kg/m3). What do your result and comparison suggest about the structure of matter?arrow_forwardPeriod 6 is unusual in several ways.(a) It is the longest period in the table. How many elements be-long to Period 6? How many metals?(b) It contains no metalloids. Where is the metal/nonmetal boundary in Period 6?arrow_forward
- The radioactive isotope Carbon-14 has a half-life of 5,730 years. Given 300 grams of C-14, what is the remaining mass (in grams) of the isotope after 250 years have elapsed? A) 291.06g B) 8.94g C) 97.02g D) 202.98garrow_forwardAn elementary particle produced in a laboratory experiment travels 0.319 mm through the lab at a relative speed of 0.953c before it decays (becomes another particle). (a) What is the proper lifetime of the particle? (b) What is the distance the lab travels as measured from the particle's rest frame? (a) Number i Units (b) Number i Unitsarrow_forwardAn electron has a constant acceleration of 3.2 m/s², At a certain instant, its velocity is 9.6 m/s. The velocity of the electron 2.5 s earlier was 1. 3.6 m/s 2. 3. 4. 1.6 m/s 2.4 m/s 1.9 m/sarrow_forward
- For the 3pz and 4dxz hydrogen-like atomic orbitals, sketch the following: The radial function Rarrow_forwardAt time t = 0 a sample contains 3.57 108 nuclei of a particular nuclide. Exactly one year later the sample contains 3.09 108 nuclei of the same species. Calculate the half-life of the decay.arrow_forwardExplain which kind of microstructures you expect to observe at room temperature if an iron-carbon alloy of eutectoid composition is cooled down following the red and blue curves. 800 727° 700 Coarse pearlite 600 a+ FeC Fine pearlite 500 y+ a+ Fe,C 400 Bainite 300 M5- 200 so - Mo 100 1 sec 1 min 1 hour 1 day 102 103 104 105 0.1 10 Time, secondsarrow_forward
- The kinetics of the austenite-to-pearlite transformation obey the Avrami relationship. The fraction transformed- time data is given below. Fraction Transformed Time (s) 0.2 12.6 0.8 28.2 Determine the total time required for 98% of the austenite to transform to pearlite: Write up to 2 DECIMAL PLACES Determine the transformation rate (per minute). Write up to 4 DECIMAL PLACES. Example: 0.0123arrow_forwardAt t = 0 there are 4.11 1011 nuclei of a particular nuclide in a sample. The decay rate is measured to be 3.21 106 s1. Calculate the half-life.arrow_forwardA sample of 137Cs (half-life = 30.1 years) decays at a rate of 1010 decays per second. How long will it take the decay rate to decrease to 107 decays per second?arrow_forward
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