Take some free points my fellow physics whizzes

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?

Wavelength, frequency, and energy are related. what happens to a wave as it’s wavelength gets shorter?

Astudent pushes a 60-n block across the floor for a distance of 10 m. how much work was done to move the block