Name 16 catastrophic events

An object is 10 cm from the mirror, its height is 1 cm and the focal length is 5 cm. what is the image height? (indicate the object orientation by including the + or - sign with the answer.) hi = cm +1 -1 +10 -10

Anybody wanna ? (picture included? )

The first law of thermodynamics states that heat added to a system is neither created nor destroyed but is as it changes into other forms of energy.