Acircular disk of radius 0.015 m rotates with a constant angular speed of 5.0 rev/s. what is the acceleration of a point on the edge of the disk?

Which property of fossils allow scientists to determine the relative rock ages..

In which situation has the independent variable for the experiment been changed? check all that apply. changed from counting the number of duckweed at day 0 and day 14 to counting them every day changed from testing duckweed growth in beakers to testing duckweed growth in large outdoor tanks changed from testing the effect of ph on duckweed growth to testing the effect of light levels on duckweed growth changed from testing the effect of acid ph on duckweed growth to testing the effect of basic ph on duckweed growth

What’s #16 asking and how do i solve it?