SUSTAINABLE ENERGY (LL)
2nd Edition
ISBN: 9780357667224
Author: DUNLAP
Publisher: CENGAGE L
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 5, Problem 11P
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).
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
The 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?
Q1// In an attempt to understand the mechanism of the depolarization process in a fuel cell, an
electro-kinetic model for mixed oxygen-methanol current on platinum was developed in the
laboratory at FAMU. A very simplified model of the reaction developed suggests a functional
relation in an integral form. To find the time required for 50% of the oxygen to be consumed, the
time, T is given by:
-3.5
6.87X
T = G
-)dx
√X² +4
Use Simpson's 3/8 multiple segment rule with 6 segments to find the time required for 50% of the
oxygen to be consumed.
The half-life of cesium-137 is 30 years. Suppose we have a 60-mg sample.
(a) Find the mass that remains after t years.y(t) =
(b) How much of the sample remains after 60 years? (Round your answer to two decimal places.) (c) After how long will only 1 mg remain? (Round your answer to one decimal place.)t =
Chapter 5 Solutions
SUSTAINABLE ENERGY (LL)
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
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.Similar questions
- An 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_forwardThe 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_forwardApplication of Differential Equations (Show complete solutions)Radioactive carbon-14 fossil decays at a rate proportional to its amount present and has a half-life of approximately 5,700 years. Estimate the age of a fossil in which 80% of its carbon-14 has decayedarrow_forward
- Period 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_forwardThe stress-strain behavior of a material is shown in the figure. Calculate the absorbed energy by this material Stress, o 70 kPa 50 kPa 0.1 0.4 Strain,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
- Assuming that the system is in equilibrium, find the value of m3, knowing that:arrow_forwardTwo similar round bars A and B are each 30 cm long as shown in the given figure. The ratio of the UB energies stored by the bars A and B, is UA 12 cm- |2 cm- EL4 cm 4cm A 20 cm 10 cm| 10 cm 20 cmarrow_forwardState if the following statements are True or False. Edit the False statement with an appropriate statementa. ( ) To check the charge neutrality, we can compare the sum of the molar concentrations of cations and anions.b. ( ) The indicator microorganism for contamination of drinking water is Cryptosporidium parvusarrow_forward
- b) A uniform rod is in equilibrium under the action of weights as shown in Figure 1. Calculate the value of W and the reaction at the fulcrum, ignoring the weight of the rod. 20m 50mm 100mm 250mm 250mm W 25N 10N 40N 40N Figure 1 (8 marks)arrow_forwardCalculate the wavelength of light emitted when each of the following transitions occur in the hydrogen atom. What type of electromagnetic radiation is emitted in each transition? a. n = 4 → n = 3 b. n = 5 → n = 4 c. n = 5 → n = 3arrow_forwardA square high-density polyethylene [a = 158 × 10-6/°C] plate has a width of 295 mm. A 177 mm diameter circular hole is located at the center of the plate. If the temperature of the plate increases by 45°C, determine: (a) the change in width of the plate. (b) the change in diameter of the hole. Answer: (a) Aw= (b) Ad = i i mm mmarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Materials Science And Engineering PropertiesCivil EngineeringISBN:9781111988609Author:Charles GilmorePublisher:Cengage Learning
Materials Science And Engineering Properties
Civil Engineering
ISBN:9781111988609
Author:Charles Gilmore
Publisher:Cengage Learning
The Science Inside Concrete Binders; Author: Dow;https://www.youtube.com/watch?v=GZq3Cyn2mVE;License: Standard Youtube License