Rahul sits in a chair reading a book. which force is equal to the force rahul exerts on earth? rahul’s weight the chair’s weight the sum of the weights of rahul and the book the sum of the weights of the chair, rahul, and the book

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is

In order of decreasing light-transmitting capabilities of materials, which is the correct sequence? a. transparent -> translucent -> opaque b. opaque -> transparent -> translucent c. opaque -> translucent -> transparent d. translucent -> transparent -> opaque

How can you measure the amplitude of a longitudinal wave?