Assignment:
Q1. A seismograph 300 km from the epicenter of an earthquake recorded a maximum amplitude of 5.9 x 10^2 µm. Find this earthquake's magnitude on the Richter scale.
Q2. An artifact was found and tested for its carbon-14 content. If 81% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? Assume that carbon-14 has a half-life of 5,730 years.
Provide complete and step by step solution for the question and show calculations and use formulas.