Finish the lyrics
My neck my back

What type of light does this light bulb produce most (i.e. at what wavelength does the spectrum have maximum intensity)?

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.

If steel is more dense that lake water, why can a boat float