Jawapan

2016-04-18T21:01:35+08:00

Ini Jawapan Diperakui

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Jawapan diperakui mengandungi maklumat yang boleh dipercayai dan diharapkan yang dijamin dipilih dengan teliti oleh sepasukan pakar. Brainly mempunyai berjuta-juta jawapan berkualiti tinggi, semuanya disederhanakan dengan teliti oleh ahli komuniti kami yang paling dipercayai, tetapi jawapan diperakui adalah terbaik di kalangan terbaik.
It is not squeak. It is the sound of doors creaking. Doors make the creaking sound when it is old, rusty or you haven't oiled it properly.

You get a lot of friction and there's a lot more of friction when two things are stationary than when they're moving. So, essentially the two bits of the hinge lock together, then the hinge bends a bit and then the force gets enough for it break and it jumps forward a bit and then it stops and then bends a bit and it jumps forward.

This jumping can happen at a range of pitches, including the horrible 50-100 Hertz range. As you're getting jump, jump, jump, jump, what you hear is the horrible creaking noise.