A plane progressive wave is represented by the equation y =2sin (2000πt- 0.5x) the symbols have their usual meanings. What is the frequency of the wave and the wavelength

Explanation:

As w = 2000π

2πf= 2000π

f= 1000Hz

speed = wavelength × f= w/k

wavelength = 2000π/ (0.5× 1000)

= 4π

or

12.57

i guess that visual aids present persuasive examples to what you are presenting, some factors would be theme (does it fit with the color, information, what you are presenting), size (can you see it, is it a big enough span of data/information), and overall look of the visual aid.

hope this : )

there is no correct list among the choices you've provided.

the list might look something like this:

-- baby human

-- piccolo

-- flute

-- soprano singer

-- trumpet

-- tenor singer

-- trombone

-- baritone singer

-- baritone horn

-- bass singer

-- tuba

since i had to make up the list myself, i made it easy on myself, and i didn't try to shuffle the string instruments and woodwinds into it too.