21ST CENT.AST.W/WKBK+SMARTWORK >BI<
6th Edition
ISBN: 9780309341523
Author: Kay
Publisher: NORTON
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Chapter 8, Problem 32QP
To determine
Whether the axes of Figure 8.7 is linear or logarithmic, the number of half-lives does the number of parent isotope is equal to the number of daughter nucleus. Whether this result is unique to this example.
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Imagine you are a scientist and you are working with a museum on an archaeology exhibit. They tell you that they have an ancient leaf they believe to be 24,000 years old. You use radiocarbon dating and discover that the leaf contains 1/32 of the carbon-14 of a living plant. What do you tell the museum?(half life of 14-carbon = 6000 years)
A rock sample which originally contained 400 grams of radioactive isotope X now contains 25 grams of the material. The half-life of isotope X is 10,000 years. How old is the rock sample? (Give your answer without any punctuation or lables. For example: 15000).
Using the differential equation model:
(dN/dt) = -kN. (k>0) where N(t) = amount of 14C at time t,
approximately how old is a fossil with 17 g of 14C if it initially possessed 45 g of ¹4c?
(Note: assume half life of 14C to be 5700 years)
Choose All Correct Answers Below
(A) 7650 years
B) 8005 years
C) 5792 years
D
9430 years
1012 years
9622 years
Chapter 8 Solutions
21ST CENT.AST.W/WKBK+SMARTWORK >BI<
Ch. 8.1 - Prob. 8.1CYUCh. 8.2 - Prob. 8.2CYUCh. 8.3 - Prob. 8.3ACYUCh. 8.3 - Prob. 8.3BCYUCh. 8.4 - Prob. 8.4CYUCh. 8.5 - Prob. 8.5CYUCh. 8.6 - Prob. 8.6CYUCh. 8 - Prob. 1QPCh. 8 - Prob. 2QPCh. 8 - Prob. 3QP
Ch. 8 - Prob. 4QPCh. 8 - Prob. 5QPCh. 8 - Prob. 6QPCh. 8 - Prob. 7QPCh. 8 - Prob. 8QPCh. 8 - Prob. 9QPCh. 8 - Prob. 10QPCh. 8 - Prob. 11QPCh. 8 - Prob. 12QPCh. 8 - Prob. 13QPCh. 8 - Prob. 14QPCh. 8 - Prob. 15QPCh. 8 - Prob. 16QPCh. 8 - Prob. 17QPCh. 8 - Prob. 18QPCh. 8 - Prob. 19QPCh. 8 - Prob. 20QPCh. 8 - Prob. 21QPCh. 8 - Prob. 22QPCh. 8 - Prob. 23QPCh. 8 - Prob. 24QPCh. 8 - Prob. 25QPCh. 8 - Prob. 26QPCh. 8 - Prob. 27QPCh. 8 - Prob. 28QPCh. 8 - Prob. 29QPCh. 8 - Prob. 30QPCh. 8 - Prob. 31QPCh. 8 - Prob. 32QPCh. 8 - Prob. 33QPCh. 8 - Prob. 34QPCh. 8 - Prob. 35QPCh. 8 - Prob. 36QPCh. 8 - Prob. 37QPCh. 8 - Prob. 38QPCh. 8 - Prob. 39QPCh. 8 - Prob. 40QPCh. 8 - Prob. 41QPCh. 8 - Prob. 42QPCh. 8 - Prob. 43QPCh. 8 - Prob. 44QPCh. 8 - Prob. 45QP
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- Give the starting value a, the growth/decay rate r, and the continuous growth/decay rate k. If there is exponential is decay your growth ates should be negative. For help entering logarithms, see help (logarithms) 2 = 0.208 - (e0.22)€ nas: help (numbers) help (numbers) help (numbers)arrow_forwardA sample of carbon-14 has a mass of 2.0 × 10–6 g. Carbon-14 has a half-life of 6000 years. How much carbon-14 will be left after 24 000 years? How would I sovle this?arrow_forwardCarbon-14 is radioactive while Carbon-12 is stable. In your body, the ratio of C-14 to C-12 is for every 10,000 C-14 atoms, there are 1 trillion (1,000,000,000,000) C-12 atoms. This is the normal ratio for livings things. In a piece of a sabre-tooth tiger bone, a scientist finds there are only 625 C-14 atoms for every 1 trillion C-12 atoms.How old is the sabre-tooth tiger bone? The half-life for Carbon-14 is 5730 years.arrow_forward
- - Life x S HW 18-2 w NWP Assessment Player Ul Appli x on.wiley.com/was/ui/v2/assessment-player/index.html?launchld 4368ed39-f195-462d-a6ef-6b156bd84883#/question/3 Wa. O YouTube Maps M Gmail Question 4 of 6 0.2/2 Your answer is partially correct. The drawing shows an equilateral triangle, each side of which has a length of 4.25 cm. Point charges are fixed to each corner, as shown. The 4.00 UC charge experiences a net force due to the charges qa and qg. This net force points vertically downward and has a magnitude of 568 N. Determine (a) charge qa. (b) charge qg. +4.00 C (a) Number -1.99E+7 Units (b) Number -1.99E+7 Units re to search O N O 59°F O 40 G DELL F3 F5 F6 F7 F8 F9 F10 F11 F12 PrtScr Insert Delete Po 23 2$ & ) Backspace 3 6 8 E T. Y. U --- IIIarrow_forwardAn isotope of a radioactive element has half-life equal to 5 thousand years. Imagine a sample that is so old that most of its radioactive atoms have decayed, leaving just 20 percent of the initial quantity of the isotope remaining. How old is the sample? Give your answer in thousands of years, correct to one decimal place. Age : ___ thousand years.arrow_forwardUranium, an important component of both nuclear weapons and nuclear reactors, has two major isotopes—U-238, which has a half-life of approximately 4.5 billion years, and U-235, which has a half-life of approximately 700 million years. Both were present in equal amounts at the time of the creation of the Earth, 4.5 billion years ago. How many billion years after the creation of the Earth had the amount of radiation from uranium decayed to half the amount present at the time of the creation of the Earth? (Round your answer to the nearest hundredth of a billion years.)arrow_forward
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