Q1. An electric circular saw is designed to reach its final angular speed, starting from rest, in 1.40 s. Its average angular acceleration is 370 rad/s2. Find its final angular speed.
Q2. A centripetal force of 270N acts on a 1,000kg satellite moving with a speed of 5,000m/s in a circular orbit around a planet. What is the radius of its orbit?
Q3. An oil drop whose mass is determined to be 3.3x10^-15 is held at rest between two large plates separated by 1cm while the potential difference between them is 340 V. How numerous excess electrons does this have here?