mary is standing at a place such that she makes an angle of 42° to the right of the normal of a mirror. where should mary's mom stand so that she can best see mary's reflection in the mirror? a) at an angle 84° to the right of the normalb) directly behind maryc) at an angle of 42° to the left of the normald) at an angle 90° with the normal

A40.0 l tank of ammonia has a pressure of 12.7 kpa. calculate the. volume of the ammonia if it’s pressure is changed to 8.4 kpa while its temperature remains constant.

Amoving company collects data about couches they move and displays the data in a table. the force along the ramp, the angle of the ramp, and the height the couch is raised to are shown. which statements correctly compare the work done to move the couches? check all that apply. the same amount of work is done for couches 1 and 3. the same amount of work is done for couches 2 and 3. the work for couch 1 is greater than the work for couch 2. the work for couch 2 is less than the work for couch 3. the work for couch 3 is greater than the work for couch 1. the work for couch 2 is greater than the work for couch 1.

What happens when you slowly pulled the carboard?