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The mass of a radioactive substance follows a continuous
The mass of a radioactive substance follows a continuous exponential decay model, with a decay rate parameter of 8% per day. A sample of radioactive substance was taken three days ago. If the sample h… read more
Debdatta Bhattachary
Doctoral Degree
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The half-life of a radioactive substance is 9 days. After 6
The half-life of a radioactive substance is 9 days. After 6 days a sample of the substance has been reduced to a mass of 2 mg.Q1: What was the initial mass (in mg) of the sample? (Round your answer to… read more
Ashok Kumar
Electrical Engineer
Master's Degree
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The half-life of a radioactive substance is 13 days. After
The half-life of a radioactive substance is 13 days. After 12 days a sample of the substance has been reduced to a mass of 6 mgQ1: What was the initial mass (in mg) of the sample? (Round your answer t… read more
Ashok Kumar
Electrical Engineer
Master's Degree
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The half-life of Palladium-100 is 4 days. After 12 days a
The half-life of Palladium-100 is 4 days. After 12 days a sample of Palladium-100 has been reduced to a mass of 2 mg.Q1: What was the initial mass (in mg) of the sample? (Round your answer to nearest … read more
Ashok Kumar
Electrical Engineer
Master's Degree
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The half-life of Radium-226 is 1590 years. If a sample
The half-life of Radium-226 is 1590 years. If a sample contains 300 mg, how many mg will remain after 3000 years?(Round your answer to 2 decimal places as needed)… read more
Ashok Kumar
Electrical Engineer
Master's Degree
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The half-life of a radioactive substance is 14 days. After
The half-life of a radioactive substance is 14 days. After 20 days a sample of the substance has been reduced to a mass of 5 mgQ1: What was the initial mass (in mg) of the sample? (Round your answer t… read more
Ashok Kumar
Electrical Engineer
Master's Degree
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Q1 has 2 parts: The half-life of a radioactive substance is
Q1 has 2 parts: The half-life of a radioactive substance is 9 days. After 12 days a sample of the substance has been reduced to a mass of 5 mg.What was the initial mass (in mg) of the sample? (Round y… read more
Ashok Kumar
Electrical Engineer
Master's Degree
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Q1: The half-life of Radium-226 is 1590 years. If a sample
Q1: The half-life of Radium-226 is 1590 years. If a sample contains 100 mg, how many mg will remain after 2000 years? (Round your answer to 2 decimal places as needed)Q2: The half-life of Palladium-10… read more
Ashok Kumar
Electrical Engineer
Master's Degree
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I need help with exponential and logarithmic models. Q1: The
Hello, I need help with exponential and logarithmic models.Q1: The half-life of a radioactive substance is 13 days. After 20 days a sample of the substance has been reduced to a mass of 1 mg.What was … read more
Jennifer
Tutor
Masters of Education
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Assume that for the average individual, a certain medication
Assume that for the average individual, a certain medication has a half life of 5 hours in the bloodstream. You take a 600 milligram dose of that medication and no further doses. How much of this medi… read more
Tom Piscaer
Master's Degree
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Q1) The population of the world in 1987 was 5 billion and the
Q1) The population of the world in 1987 was 5 billion and the relative growth rate was estimated at 2 percent per year. Assuming that the world population follows an exponential growth model, find the… read more
Osbert12
Master's Degree
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The model for radioactive decay is y=ysub0e^(-kt) A radioactive substance has a half-life 790 years. If 50 grams are present today, in how many years will 31 grams be present? Round k 7 decimal places… read more
Chirag
Master's Degree
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The model for radioactive decay is y=ysub0e^-kt A radioactive substance has a half-life 880 years. If 65 grams are present today, in how many years will 25 grams be present? Round k 7 decimal places. … read more
Stevewh
Teacher
Bachelor's Degree
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The model for radioactive decay is y=ysub0e^-kt A radioactive substance has a half-life 880 years. If 65 grams are present today, in how many years will 25 grams be present? Round k 7 decimal places. … read more
Stevewh
Teacher
Bachelor's Degree
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the mass m of a radioactive substance present at time t can
the mass m of a radioactive substance present at time t can be modelled by the equation m=moe^kt, where mo is the initial mass of the substance and k is the constant. after 75 years, four fifths of th… read more
Ashok Kumar
Electrical Engineer
Master's Degree
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W-187 is a radioactive isotope that has a half-life of 1 day.
W-187 is a radioactive isotope that has a half-life of 1 day. Suppose you start with a 100-mg sample. What is the equation: y=100(1/2)^x (x- represents days) How would I find how long it would take fo… read more
Ashok Kumar
Electrical Engineer
Master's Degree
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i need it now please Q1 radioactive dencay: the half-life of radioactive cobalt is 5.27 years. if 100 grams of radioactive cobalt is present now, how much will be present in 20 years? in 40 years. Q2 … read more
Ben Brown
Bachelor's Degree
512 satisfied customers
1)The mass m of a radioactive substance present at time t years
1)The mass m of a radioactive substance present at time t years can be modelled by the equation m=moe^kt, where mo is the initial mass of the substance and k is a constant. After 60 year, two thirds o… read more
David C Gomez
Master's Degree
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