What is the difference between a convergent and divergent plate boundary

Explain vector addition, triangle method and parallelogram method

The focal length of a relaxed human eye is approximately 1.7 cm. when we focus our eyes on a close up object, we can change the refractive power of the eye by about 16 diopters. (a) does the refractive power of our eyes increase or decrease by 16 diopters when we focus closely? explain. (b) calculate the focal length of the eye when we focus closely.

What is the momentum of a 2 kg object moving at 15 meters per second