Miss piggy is exercising her vocal chords by matching the frequency f = 686 hz of her speaker 4 m away. where should kermit sit if he wishes to experience destructive interference between miss piggy and the speaker? list all possible answers where kermit is between miss piggy and the speaker. you may assume that miss piggy and the speaker are in phase with one another and that kermit is sitting on the line connecting miss piggy and the speaker. the speed of sound in air is 343ms−1.

for

Where z=0 m is the position of Miss Piggy and z=4 m is the position of the speaker.

Explanation:

Assuming that Miss Piggy emits a sound wave that is in phase with the speaker, and that z=0 is the position of Miss Piggy and z=4 is the position of the speaker, we would have a superposition of two traveling sound waves. Furthermore let's assume that both waves have the same amplitude. The total resulting wave will be given by:

where is the angular frequency of the traveling wave and is the wave number defined as . is the wavelength of both traveling waves (they have the same wavelength because they have the same frequency). where v is the speed of sound.

By using the trigonometric identity we can rewrite as

.

In order for the resulting wave to have maximum destructive interference, that is to be zero for any time t, we need to have

graph question answered .. you think better when you are relaxed and happy

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.