Waves Exam
Is each of the following an example of simple harmonic motion? (Yes or No)

_____ Bungee jumper
_____ Cd player spinning
_____ Newton’s cradle (5 metal balls click-clacking)
_____ Plucked guitar string

What is the spring constant of a bow and arrow where the archer must apply 240 N of force to pulls the string back 0.45 m? (Show your work!)

What is the frequency of the pulses from a light that blinks once every 40 ms? (Don’t forget to convert.  Show your work!)

If microwaves have a frequency around 9.00 x 10^9 Hz and travel at the speed of light (3.00 x 10^8 m/s), what is their wavelength? (Show your work!)

Look at this diagram:

______ How many wavelengths are there?
______ Is this a pulse wave? (Yes or No)
______ Is this a transverse or longitudinal wave?

Why is the velocity greatest at the equilibrium position?

Why not before it?

Why not beyond it?

What three things do we disregard when talking about a pendulum?

For a pendulum in motion:
Where is the acceleration greatest? (At the equilibrium point or at the ends?)

Where is the velocity greatest? (At the equilibrium point or at the ends?)

Why does an acrobat swing past the equilibrium position when there is no force acting on her at that point?

If two waves, one with an amplitude of 0.55 m and the other with an amplitude of 0.30 m, are interacting in the same medium, what would be the resulting amplitude if they constructively interfered with one another?

If a 7.0 m long rope is stretched and vibrated, what would be the wavelengths if the vibration resulted in the creation of 4 nodes? (Include a diagram with your explanation and show your work.)

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