Pls help . Which process produces the energy that is used in photosynthesis?

Which accurately compares concave and convex lenses?

Amoving electron has kinetic energy k1. after a net amount of work w has been done on it, the electron is moving one-quarter as fast in the opposite direction. (a) find w in terms of k1. (b) does your answer depend on the final direction of the electron's motion?

What is the measure of how much matter is in an object and that can be measured using a balance? a. height b. volume c. weight d. mass