Why is the sun so far away

Abird sitting high in a tree is an example of what type of wnergy

An object is 10. cm from the mirror, its height is 3.0 cm, and the focal length is 2.0 cm. what is the image height? (indicate the object orientation by including the + or - sign with the answer.) hi = cm +1.33 -1.33 +0.75 -0.75

The electronic structure or chlorine is 2.8.7 what is the electronic structure of fluorine?