boat travels through a river at a speed of 25 m/s, passing through schools and opening the soundtrack. One student measured 610 Hz. Turns out, four seconds later, the student again measured 587 Hz if the river was a straight line 20 m wide and the speed of sound is 340 m/s.

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.

What is the speed of an object at a given moment?

As microwave light travels through a liquid, it moves at a speed of 2.2 x 108 m/s. if the frequency of this light wave is 1.1 x 108 hz, what is the wavelength of this microwave?