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Classical Mechanics Level 1

A man claps his hands near a mountain and hears the echo after 4 seconds. Let the speed of sound in air be 1188 \(km h^{-1}\). Find the distance of the man from the mountain in meters.

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Community

100 Day Summer Challenge

Sound! Sound! Sound! Sound!!!!

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.

Master advanced concepts through explanations,
examples, and problems from the community.

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.

Master advanced concepts through explanations,
examples, and problems from the community.

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.