Select all that apply.
a column of air in a tube is vibrating at its fundamental frequency of 150hz. which of the following frequencies could also exist in the tube as harmonics?
- 75 hz
- 225 hz
- 300 hz
- 450 hz

-300 Hz

-450 Hz

Explanation:

As we know that frequency of nth harmonic mode is known as

now we know that for fundamental mode of frequency we will have

n = 1

so we will have

now given that

and also we have

n = integer

so we will have

n = 2

n = 3

need to see circuit to get time constant

  distance on the y-axis and time on the x-axis.

explanation:

the instantaneous velocity = change in position/time taken

the slope of the graph should give instantaneous velocity.

  slope of a graph = change in value of y -axis / change in values of x -axis

  comparing both the equations

    change in value of y -axis = change in position

  change in values of x -axis = time taken

so position values should be on the y axis and time values should be on the x axis.

distance on the y-axis and time on the x-axis.