Mathematics for Elementary Teachers with Activities (5th Edition)
5th Edition
ISBN: 9780134392790
Author: Beckmann, Sybilla
Publisher: PEARSON
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Chapter 5.4, Problem 11P
Suppose that a laboratory has 1 gram of a radioactive substance that has a half-life of 100 years. “A half-life of 100 years” means that, no matter what amount of the radioactive substance one starts with, after 100 years, only half of it will be left. So, after the first 100 years, only a quarter of a gram would be left.
- How many hundreds of years will it take until there is less than one hundred millionth of a gram left of the laboratory’s radioactive substance? (Give a whole number of hundreds of years.)
- How many hundreds of years will it take until there is less than one billionth of a gram left of your radioactive substance? (Give a whole number of hundreds of years.)
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The velocity of a particle moves along the x-axis and is given by the equation ds/dt = 40 - 3t^2 m/s. Calculate the acceleration at time t=2 s and t=4 s. Calculate also the total displacement at the given interval. Assume at t=0 s=5m.Write the solution using pen and draw the graph if needed.
The velocity of a particle moves along the x-axis and is given by the equation ds/dt = 40 - 3t^2 m/s. Calculate the acceleration at time t=2 s and t=4 s. Calculate also the total displacement at the given interval. Assume at t=0 s=5m.Write the solution using pen and draw the graph if needed.
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Chapter 5 Solutions
Mathematics for Elementary Teachers with Activities (5th Edition)
Ch. 5.1 - a. Anita had 12 of a bag of fertilizer left. She...Ch. 5.1 - a. Discuss the meaning of 12.14.Include a simple...Ch. 5.1 - Paul used 34 cup of butter in the batch of...Ch. 5.1 - Which of the following are word problems for...Ch. 5.1 - Which of the following are word problems of 34.5=?...Ch. 5.1 - Consider this word problem about baking brownies:...Ch. 5.1 - Explain why it would be easy to interpret the...Ch. 5.1 - Write a word problem for 13.14=? Use the...Ch. 5.1 - Write a word problem for 2.35=? Use the definition...Ch. 5.1 - Write a word problem for 23.5=? Use the definition...
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