The angle thetaθ is an integer (e. g. 0, plus or minus±1, plus or minus±2, ...) when measured in radians. Give the radian measure of the angle. (It helps to remember piπalmost equals≈3.)

Write short note on the following ; collision theory, rotation angle and angular velocity, centripetal acceleration, coriolis force, and newton's law of gravitation.

May someone explain how to do this question?

Awoman stands a distance d from a loud motor that emits sound uniformly in all directions. the sound intensity at her position is an uncomfortable 2.0×10-3 w/m2. at a distance 2.6 times as far from the motor, what are (a) the sound intensity and (b) the sound intensity level relative to the threshold of hearing?