Find the measure of a. 180 degrees b. 149 degrees c. 63 degrees d. 32 degrees
1 answer:
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The question is incomplete, here is the complete question:
Recall that m(t) = m.(1/2)^t/h for radioactive decay, where h is the half-life. Suppose that a 500 g sample of phosphorus-32 decays to 356 g over 7 days. Calculate the half life of the sample.
<u>Answer:</u> The half life of the sample of phosphorus-32 is
<u>Step-by-step explanation:</u>
The equation used to calculate the half life of the sample is given as:
where,
m(t) = amount of sample after time 't' = 356 g
= initial amount of the sample = 500 g
t = time period = 7 days
h = half life of the sample = ?
Putting values in above equation, we get:
Hence, the half life of the sample of phosphorus-32 is
Answer:
B
Step-by-step explanation:
Noting the following rule of radicals
×
=
Given
( +
)(
-
)
Each term in the second factor is multiplied by each term in the first factor
= (
-
) +
(
-
) ← distribute parenthesis
= -
+
-