formula of moment when force is parallel to the distance between the fulcrum and line of action of force​

The place you get your hair cut has two nearly parallel mirrors 6.00 m apart. as you sit in the chair, your head is 2.00 m from the nearer mirror. looking toward this mirror, you first see your face and then, farther away, the back of your head. (the mirrors need to be slightly nonparallel for you to be able to see the back of your head, but you can treat them as parallel in this problem.) how far away does the back of your head appear to be?

Apersons beliefs and general outlook, which act like filters on the information they receive are called ?

Convection currents are caused by differences in what two things?