Two swift canaries fly toward each other, each moving at 15.0 m/s relative to the ground, each warbling a note of frequency 1750 hz. (a) what frequency note does each bird hear from the other one? (b) what wavelength will each canary measure for the note from the other one?

Part a)

f = 1911.5 Hz

Part b)

Explanation:

Here the source and observer both are moving towards each other

so we know that the apparent frequency is given as

here we know that

now we will have

Part b)

Apparent wavelength is given by the formula

here we will have

number of electrons for neutral cl

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards