Question 1

which statement best describes wavelength?

a. wavelength is the same as pitch.

b. wavelength is the speed at which a wave travels.

c. wavelength is the length of one complete wave cycle.

d. wavelength is the length of two complete wave cycles.

question 2

as demonstrated by the doppler effect, why does sound increase in pitch as a sound source approaches you?

a. objects vibrate slower when they move forward.

b. the waves are closer together because the object is moving toward you.

c. objects vibrate faster when they move forward.

d. the waves are farther apart because the object is moving toward you.

question 3

which statement best describes frequency and pitch?

a. pitch is how frequency is perceived.

b. frequency and pitch are the opposite of wavelength and velocity.

c. frequency and pitch are the same as wavelength and velocity.

d. frequency and pitch are never found in a description of the doppler effect.

for

Two large, flat, horizontally oriented plates are parallel to each other, a distance d apart. half way betwween the two plates the electric field has magnitude e. if the separation of the plates is reduced to d/2 what is the magnitude of the electric field half way between the plates?

What color would an object that reflects green and blue light appear to be in white light? a. blue b. cyan c. magenta d. black

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