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How many half-lives have elapsed when the amount of a sample's Radioactive isotopes is reduced to 3.125 percent of the original amount in the sample?
The idea is to convert the percent to a fraction (divide it by 100), and then solve the equation:
(1/2)^x = (that fraction)
(Note: Using "^" for "power".)
In the general case, solving this equation requires logarithms. But in this specific case, you can just try out different whole numbers for "x".
# 1/2 lives vs fraction
1 0.5
2 0.25
3 0.125
4 0.0625
5 0.03175
6 0.015875 The answer falls between 5 and 6 half lives, closer to 5.
What else can I help you with?
How can this be used to calculate the amount of a radioactive element compared to its original amount?
To calculate the amount of a radioactive element compared to its original amount, you need to use the radioactive decay equation: A = A₀ * e^(-λt), where A is the final amount, A₀ is the initial amount, λ is the decay constant, and t is the time elapsed. By plugging in the values for A₀, t, and λ, you can determine the final amount of the radioactive element.
Is a radioactive sample has decayed until only one eighth of the original sample remains unchanged how many half lives have elapsed?
Three half lives have elapsed. This can be determined by calculating how many times the original sample size must be halved to get to one eighth: (1/2) * (1/2) * (1/2) = 1/8.
What is the formula for calculating the acceleration of an object when given the initial velocity, final velocity, and time elapsed?
The formula for calculating acceleration is: acceleration (final velocity - initial velocity) / time elapsed.
Is the velocity of an object always proportional to elapsed time?
No, the velocity of an object is not always proportional to elapsed time. Velocity is defined as the rate of change of an object's position with respect to time, so it can vary depending on factors like acceleration, deceleration, or changes in direction.
How much time elapsed before the ball reached its maximum height?
The time elapsed before the ball reached its maximum height is half of the total time it takes to go up and come back down. This is because the ball reaches its maximum height at the halfway point of its vertical motion.
How can this be used to calculate the amount of a radioactive element compared to its original amount?
To calculate the amount of a radioactive element compared to its original amount, you need to use the radioactive decay equation: A = A₀ * e^(-λt), where A is the final amount, A₀ is the initial amount, λ is the decay constant, and t is the time elapsed. By plugging in the values for A₀, t, and λ, you can determine the final amount of the radioactive element.
Is a radioactive sample has decayed until only one eighth of the original sample remains unchanged how many half lives have elapsed?
Three half lives have elapsed. This can be determined by calculating how many times the original sample size must be halved to get to one eighth: (1/2) * (1/2) * (1/2) = 1/8.
What best describes the information given by radiometric dating?
Radiometric dating provides an estimate of the age of a rock or fossil based on the decay of radioactive isotopes within it. By measuring the ratio of parent isotopes to daughter isotopes, scientists can determine the elapsed time since the rock or fossil formed. This technique is commonly used to determine the age of Earth materials and artifacts.
What is the radiometric dating formula used to determine the age of rocks and fossils?
The radiometric dating formula used to determine the age of rocks and fossils is based on the decay of radioactive isotopes. One common formula is the equation for radioactive decay: N N0 e(-t), where N is the amount of radioactive isotope remaining, N0 is the initial amount of the isotope, is the decay constant, and t is the time elapsed.
The number of years since a rock has formed?
The number of years since a rock has formed is determined by using radiometric dating techniques to measure the decay of radioactive isotopes within the rock. By measuring the ratio of parent isotopes to daughter isotopes, scientists can determine the rock's age. This process involves comparing the rock's isotopic composition to known decay rates and constants to calculate the time elapsed since the rock's formation.
A particular element has a half life of 27 days after 54 days have elapsed how much of the radioactive material is left?
In one cycle, the material would be reduced to one half of the original, leaving one half of the material. In the second cycle (54/27 = 2), there would be 1/2 of that half, leaving 1/4 of the original material.
The absolute age of a rock is the approximate number of years ago that the rock formed The absolute age of an igneous rock can best be determined by?
The absolute age of an igneous rock can best be determined by radiometric dating methods, such as uranium-lead dating or potassium-argon dating. These methods rely on the natural decay of radioactive isotopes in the rock to calculate the time elapsed since the rock formed.
How can the age of a material be determined through dating?
Ummmmm......YES! They definitely can be dated and the material's age can be determined. For example take tree cores. If we take a sample and count the rings, there's our age! Anyway, I hope this answers the question.
What is Odayz?
In this folder, you get the newest stuff. Original meaning: zero day elapsed since the stuff released, but it's on the net.
What is the meaning of elapsed?
Elapsed means: to slip or pass by: Thirty minutes elapsed before the performance began
What does Elapsed transport time mean?
What does elapsed time meen?
Are the stars visible at 7 pm still at 11 pm in their original position?
No - in the four hours that have elapsed, they will have moved 60 degrees across the sky.
