A converging lens has a focal length of 10 cm. A 10-cm pencil is placed at such a distance from the lens that an image of 15 cm is formed. What is the magnification of the lens at this location?

Need people build a dam to create a reservoir that supplies water a nearby city needs. describe two ways this action will likely affect the water cycle in the local environment. (5 points) worth 20 points

How will the system respond to a temperature increase?

Aboy with a mass 25 kg climbs into a small tree. he sits on a branch that is 2.o m above to the ground.what is his gravitational potential energy above the ground?