Answer i will give good rating and mark brainlest what is the speed of a wave that has a wavelength of 40 cm and a frequency of 4 hz (cycles/second)? a) 160 cm/s b) 1 mm/s c) 10 cm/s d) 40 cm/s

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.

The combining of light nuclei is called blank. blank as in not actually blank. you know what im tryin to say.

Patricia is trying to compare the average rainfall of new york to that of arizona. a comparison between these two states for the months of july through september would best be measured in