What could you do to increase the electric force between two charged particles by a factor of 16?

The sun generates both mechanical and electromagnetic waves. which statement about those wave is true?

Which statement best describes how private industry decides where to spend the money on research and development

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.