Which of the following conversion factors would you use to change 18 meters to kilometers?

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.

Which of the following is an example of units for speed

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is