Answer:
The rock is 3.75 billion years ago.
Explanation:
Given that:
Half life = 1.25 billion years
1 billion years = 10⁹ years
So,
Half life = 1.25 × 10⁹ years

Where, k is rate constant
So,


The rate constant, k = 5.5452 × 10⁻¹⁰ years⁻¹
Initial amount [A₀] = 80 micrograms
Final amount
= 10 micrograms
Using integrated rate law for first order kinetics as:
![[A_t]=[A_0]e^{-kt}](https://tex.z-dn.net/?f=%5BA_t%5D%3D%5BA_0%5De%5E%7B-kt%7D)
So,





So,
<u>The rock is 3.75 billion years ago.</u>
Answer:
The correct answer is option c.
Explanation:
In the 1990’s Ireland made unemployment benefits less generous. This provided an incentive to workers to find a job quicker as the employment benefits were reduced.
This would further cause the frictional unemployment rate to decline.
Frictional unemployment is the unemployment caused because of shifting from one job to another.
The natural rate of unemployment includes both structural unemployment and frictional unemployment. A reduction in frictional unemployment will cause natural unemployment to decrease.
Answer: B: Offenders engage in direct forms of violence.
Explanation: According to the Britanica Encyclopedia "White-collar crime, crime committed by persons who, often by virtue of their occupations, exploit social, economic, or technological power for personal or corporate gain". White collar crimes tends to refer to a crime committed by a bussinessman or bussinesswoman who are more likely to be middle aged or older usually by persons from the middle class and sometimes but not very often the lower class. Fraud, money laundering, stealing company funds and embezzlment are considered white collar crimes. It is often seen as less serious when compared to other crimes because it does not involve physical violence. Public order crimes are not associated to white collar crimes. Financal gain is the ulterior motive of white collar crimes.
White-collar crime have been associated with the educated and affluent ever since the term was first coined in 1949 by sociologist Edwin Sutherland, who defined it as "crime committed by a person of respectability and high social status in the course of their occupation", however, these crimes have ceased to be exclusive to such groups.