In Challenge Example 11.11 (p. 283), if the mass of the steel ball and the paperweight were the same (say 200 g), what would happen to both objects after they collide and the collision is perfectly elastic

Suppose a wheel with a tire mounted on it is rotating at the constant rate of 2.15 times a second. a tack is stuck in the tire at a distance of 0.373 m from the rotation axis. noting that for every rotation the tack travels one circumference (a) find the tack's tangential speed. (b) what is the tacks radial acceleration?

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

At what time will the interfering waves have an amplitudeof zero?