If a train conductor is describing the speed of the train as well as the direction the train is going, then the train conductor is said to be describing the train's. a. acceleration. b. speed. c. velocity d. magnitude

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.

Two polarizers are oriented at 40∘ to each other and plane-polarized light is incident on them. if only 16 percent of the light gets through both of them, what was the initial polarization direction of the incident light?

What is the rate of 12 liters of water moving through a water hose in 4.0 minutes?