The Half-life of Pennies Lab Can you use pennies to demonstrate "decay?Imagine existing more than 5,000 years and still having more than 5,000 to go! That is exactly what theunstable element carbon-14 does. Carbon-14 is a special unstable element used in the absolute datingof material that was once alive, such as fossil bones. Every 5,730 years, half of the carbon-14 in a fossilspecimen decays or breaks down into a more stable element. In the following lab you will see howpennies can show the same kind of "decay."Materials • 100 pennies • large container with a coverProcedure a. Place 100 pennies in a large, covered container. Shake the container several times andremove the cover. Carefully empty the container on a flat surface, making sure the pennies don't rollaway. b. Remove all the coins that have the "head" side of the coin turned upward. Record the numberof pennies removed and the number of pennies remaining in the data table below.Shake numberNumber ofcoins removedNumber ofcoins remaining356789Data Tablec. Repeat the process until no pennies are left in the container. Remember to remove only the coinsshowing "heads." d. Draw a graph to plot your data. Label the x-axis “Number of shakes," and label they-axis "Pennies remaining." Using data from your data table, plot the number of coins remaining at eachshake. d. Plot your data on the following graph. Label the x-axis "Number of shakes," and label the y-axis"Pennies remaining." Using data from your data table, plot the number of coins remaining at eachshake. The grid has 25 squares vertically, so each square counts as 4 pennies.10050 -4x label:X-Y plot of number of pennies remaining (Y) versus the number of shakes (X)Half-life of Carbon-14Analysis 1. Examine the "Half-life of Carbon-14" graph. Compare100the graph you have made for pennies with the one for carbon-14.Explain any similarities that you see.502512.56.2501 2 3 4 5Number of half-lives (5,730)2. Recall that the probability of landing "heads" in a coin toss is 1/2.Use this information to explain why the remaining number of pennies is reduced by about half each timethey are shaken and tossed.y label:Grams of carbon-14

The given problem is about the demonstration of Carbon-14 radioactive element by conducting a lab…

Analysis 1. Examine the "Half-life of Carbon-14" graph. Compare the graph you have made for pennies with the one for carbon-14. Explain any similarities that you see. Grams of carbon-14 Half-life of Carbon-14 100 50 25 12.5 6.25 0 1 2 3 Number of half-lives (5,730) 2. Recall that the probability of landing "heads" in a coin toss is 1/2. Use this information to explain why the remaining number of pennies is reduced by about half each time they are shaken and tossed.

Analysis 1. Examine the "Half-life of Carbon-14" graph. Compare the graph you have made for pennies with the one for carbon-14. Explain any similarities that you see. Grams of carbon-14 Half-life of Carbon-14 100 50 25 12.5 6.25 0 1 2 3 Number of half-lives (5,730) 2. Recall that the probability of landing "heads" in a coin toss is 1/2. Use this information to explain why the remaining number of pennies is reduced by about half each time they are shaken and tossed.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Radioactive decay

The emission of energy to produce ionizing radiation is known as radioactive decay. Alpha, beta particles, and gamma rays are examples of ionizing radiation that could be released. Radioactive decay happens in radionuclides, which are imbalanced atoms. This periodic table's elements come in a variety of shapes and sizes. Several of these kinds are stable like nitrogen-14, hydrogen-2, and potassium-40, whereas others are not like uranium-238. In nature, one of the most stable phases of an element is usually the most prevalent. Every element, meanwhile, has an unstable state. Unstable variants are radioactive and release ionizing radiation. Certain elements, including uranium, have no stable forms and are constantly radioactive. Radionuclides are elements that release ionizing radiation.

Artificial Radioactivity

The radioactivity can be simply referred to as particle emission from nuclei due to the nuclear instability. There are different types of radiation such as alpha, beta and gamma radiation. Along with these there are different types of decay as well.

Question

The Half-life of Pennies Lab Can you use pennies to demonstrate "decay?
Imagine existing more than 5,000 years and still having more than 5,000 to go! That is exactly what the
unstable element carbon-14 does. Carbon-14 is a special unstable element used in the absolute dating
of material that was once alive, such as fossil bones. Every 5,730 years, half of the carbon-14 in a fossil
specimen decays or breaks down into a more stable element. In the following lab you will see how
pennies can show the same kind of "decay."
Materials • 100 pennies • large container with a cover
Procedure a. Place 100 pennies in a large, covered container. Shake the container several times and
remove the cover. Carefully empty the container on a flat surface, making sure the pennies don't roll
away. b. Remove all the coins that have the "head" side of the coin turned upward. Record the number
of pennies removed and the number of pennies remaining in the data table below.
Shake number
Number of
coins removed
Number of
coins remaining
3
5
6
7
8
9
Data Table
c. Repeat the process until no pennies are left in the container. Remember to remove only the coins
showing "heads." d. Draw a graph to plot your data. Label the x-axis “Number of shakes," and label the
y-axis "Pennies remaining." Using data from your data table, plot the number of coins remaining at each
shake.

d. Plot your data on the following graph. Label the x-axis "Number of shakes," and label the y-axis
"Pennies remaining." Using data from your data table, plot the number of coins remaining at each
shake. The grid has 25 squares vertically, so each square counts as 4 pennies.
100
50 -
4
x label:
X-Y plot of number of pennies remaining (Y) versus the number of shakes (X)
Half-life of Carbon-14
Analysis 1. Examine the "Half-life of Carbon-14" graph. Compare
100
the graph you have made for pennies with the one for carbon-14.
Explain any similarities that you see.
50
25
12.5
6.25
01 2 3 4 5
Number of half-lives (5,730)
2. Recall that the probability of landing "heads" in a coin toss is 1/2.
Use this information to explain why the remaining number of pennies is reduced by about half each time
they are shaken and tossed.
y label:
Grams of carbon-14

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