A is very general in nature, while a specifies what we want to study more specifically, suggesting the key concepts we need to know Group of answer choices research topic; research question (hypothesis) non-systematic idea; systematic idea systematic idea; non-systematic idea research question (hypothesis); research topic

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.

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

Which of the following are appropriate acceleration units?