Question
A car traveling at 70 kilometers per hour accelerates to pass a truck. When the car reaches a speed of 90 kilometers per hour, the driver hears the glove compartment door start to vibrate. By the time the speed of the car is 100 kilometers per hour, the glove compartment door has stopped vibrating. This vibrating phenomenon is an example of
A.
diffraction.
B.
resonance.
C.
destructive interference.
D.
the Doppler effect.
A.
diffraction.
B.
resonance.
C.
destructive interference.
D.
the Doppler effect.
Answers
GPT-4o mini
The vibrating phenomenon described relates to the way certain frequencies can cause objects (like the glove compartment door) to vibrate when the frequency of the sound produced by the car matches the natural frequency of the object. This is an example of **B. resonance**.
Resonance occurs when an object is subjected to a frequency that matches its natural frequency, causing it to vibrate with greater amplitude. In this case, as the car accelerates and reaches certain speeds, the sound frequencies produced may resonate with the glove compartment door at first, which causes it to vibrate. When the speed increases, it may move out of that resonant frequency, causing the vibrations to stop.
So the correct answer is **B. resonance.**
Resonance occurs when an object is subjected to a frequency that matches its natural frequency, causing it to vibrate with greater amplitude. In this case, as the car accelerates and reaches certain speeds, the sound frequencies produced may resonate with the glove compartment door at first, which causes it to vibrate. When the speed increases, it may move out of that resonant frequency, causing the vibrations to stop.
So the correct answer is **B. resonance.**