assume that p-waves travel at a speed of 8 km/s. approximately what time did the earthquake occur?show all work.

What is any method of measuring the age of an object or event in years, such as using atomic half-life?

Some of the money that people deposit into a bank eventually becomes a interjection into the economy when the bank

The table below shows the elements that mainly comprise each of the four layers of earth: elements in layers layer main elements crust oxygen, silicon mantle iron, magnesium outer core iron, nickel inner core iron which of these elements make up the layer that is 0.2 to 1.1 percent of earth's total diameter?