Question

1. Alexandra and Rachel are on a train that sounds a whistle at a constant frequency as

Answer 1

Answer: the answer would be C trust me i took the test if its not that its b

hope that helps

Explanation: i took the test

Answer 2

answer:

a) lower because the sound-wave fronts reach the platform at a frequency lower than the frequency at which they are produced

explanation :3

If the train is leaving the train station, then the people who are standing on the platform would hear a sound with a lower frequency since the train is moving further away. ^^