Technician a says that you can check a leaking head gasket using a chemical tester. technician b says that you can find a leaking head gasket using an exhaust analyzer. who is correct? a. technician a b. neither technician a nor b c. technician b d. both technicians a and b need answer fast plz answer is not c. technician b

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?

How is the gravitational force related to the distance between two objects?

In a simplified model of the human eye, the aqueous and vitreous humors and the lens all have a refractive index of 1.40, and all the refraction occurs at the cornea, whose vertex is 2.60 cm from the retina. what should be the radius of curvature of the cornea such that the image of an object 40.0 cm from the cornea’s vertex is focused on the retina?