According to Wired magazine, a fidget spinner has a radius of 3.7 cm and can reach a top rotational speed of 140 rads/sec. What is the Period of the spinner at that speed and what is the tangential velocity at the edge?

What are the dimensions of the cross section that passes through the points a, f, g, and d?

In this lab you will use a cart and track to explore various aspects of motion. you will measure and record the time it takes the cart to travel certain distances, and then complete some calculations. in the space below, write a scientific question that you will answer by doing this experiment.

Which statements identify what astronomers currently know and think will happen with our universe? check all that apply. the big bang produced dark energy, which accounts for some of the energy needed to expand the universe. the vastness of space may contain a type of matter known as "dark matter." the universe is currently shrinking at a rapid rate. the universe is currently expanding at an accelerating rate. the big bang theory explains all the energy and matter discovered by scientists.