Which of the following is equivalent to 4.5 m?

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?

In positive numbers less than 1, the zeros between the decimal point and non zero are significant

Gunpowder residue is most likely to show up where on a shooters hands