If sunlight is focused at a point 0.500 m away from the lens, what is the radius of curvature of the other surface

What changes occur in the brain during the teenage years? 25 points, someone me out!a.) thinking becomes slower as the brain grows larger. b.) connections between neurons become stronger and faster. c.) unused neurons fuse together to form larger, better functioning neurons. d.) more neurons are developed.

Positrons are spontaneously emitted from the nuclei of

What is the role of lenses in microscopy?