Assume that a train is going at mach 2.5 (2.5 times the velocity of sound). The train has a horn which produces sound waves. You are standing on the ground waiting for the train How fast are the sound waves reaching you?(Answer in mach number)
Excel in math and science
Master concepts by solving fun, challenging problems.
It's hard to learn from lectures and videos
Learn more effectively through short, conceptual quizzes.
Our wiki is made for math and science
Master advanced concepts through explanations,
examples, and problems from the community.
Used and loved by 4 million people
Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.
Your answer seems reasonable.
Find out if you're right!