select all the correct answers. tina is waiting at the bus stop. she sees and hears an ambulance as it…

select all the correct answers. tina is waiting at the bus stop. she sees and hears an ambulance as it approaches and passes by her. which two changes in the loudness of the siren does tina hear? the sound becomes less loud as the ambulance approaches her. the sound becomes louder as the ambulance approaches her. the loudness of the sound remains the same as long as she can see the ambulance. the sound stops when it reaches her. the sound becomes less loud as the ambulance moves away from her.

select all the correct answers. tina is waiting at the bus stop. she sees and hears an ambulance as it approaches and passes by her. which two changes in the loudness of the siren does tina hear? the sound becomes less loud as the ambulance approaches her. the sound becomes louder as the ambulance approaches her. the loudness of the sound remains the same as long as she can see the ambulance. the sound stops when it reaches her. the sound becomes less loud as the ambulance moves away from her.

Answer

Answer:

  • B. The sound becomes louder as the ambulance approaches her.
  • E. The sound becomes less loud as the ambulance moves away from her.

Explanation:

Step1: Understand sound - distance relationship

The intensity of sound is inversely proportional to the square of the distance from the source. As the distance (d) decreases (ambulance approaches), the sound intensity (I) increases, making the sound louder. Mathematically, (I\propto\frac{1}{d^{2}}).

Step2: Analyze approaching situation

When the ambulance approaches Tina, the distance (d) between Tina and the ambulance is getting smaller. According to the (I\propto\frac{1}{d^{2}}) relationship, the sound intensity (I) increases, so the sound becomes louder.

Step3: Analyze moving - away situation

When the ambulance moves away from Tina, the distance (d) between Tina and the ambulance is getting larger. According to the (I\propto\frac{1}{d^{2}}) relationship, the sound intensity (I) decreases, so the sound becomes less loud.