The wavelength of a wave on a string is 1.2 meters. if the speed of the wave is 60 meters/second, what is its frequency? a. 0.20 hertz b. 2.0 hertz c. 50 hertz d. 10 hertz e. 15 hertz

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.

An ionic compound can conduct electricity when a it is dissolved in water b its crystals are ground into powder c it is in solid form d it is heated to just below its melting point

The movement of electrons between atoms is called an