8. Practice. A 29 cm pencil is placed 35 cm in front point of the lens is 28 cm from the lens,
a corwex lens and illuminated by a spotlight. The focal
A. What is the height of the pencil's image?
116 cm
B. How far from the lens will the image of the pencil be focused?
140 cm
Show your work
(I got the answers I just need to show them with the work)

The amount of heat required to change liquid water to vapor at its boiling temperature is 2256 kj/kg. the amount of heat required to change liquid mercury to its vapor state at its boiling temperature is 295 kj/kg. one kg of each substance is currently at its boiling point. how will the amount of thermal energy required to change each substance from a liquid to a gas differ?