When blue light of wavelength 440 nm falls on a single slit, the first dark bands on either side of center are separated by 55. 0°. Determine the width of the slit.

Hree steps to answering test questions correctly include a. underlining, repeating, reading c. reading, undoing, eliminating b. reading, underlining, erasing d. reading, underlining, eliminating

Technological solutions have good bad effects. what is one bad effect of spraying a chemical pesticide on crops

Which statements about the two fossil images are correct? 1. cave bears are ancestors of plateosaurus. 2. plateosaurus were present on earth before ostracoderms. 3. ostracoderms were the first to die. 4. plateosaurus died after the ostracoderms. 5. cave bears are the oldest fossils.