A500 hz whistle is moved toward a listener at a speed of 10 m/s. at the same time, the listener moves at a speed of 20 m/s in a direction away fromm the whistle. what is the apparent frequency heard by the listener? (the speed of sound is 340 m/s)
a) 473 hz
b) 376 hz
c) 485 hz
d) 533 hz
e) 547hz

Frequency will be 485 Hz

So option (c) will be the correct option

Explanation:

We have given frequency f = 500 Hz

Velocity of observer

Velocity of source

When both observer and source are moving then frequency is given by

, here v is the velocity of sound

So

So option (c) will be the correct option

the focus of lesson 1 is newton's first law of motion - sometimes referred to as the law of inertia. newton's first law of motion is often stated as. an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

explanation: