![]() ![]() The “sonic boom” hits the observer after the jet flies by, and it is loud because it contains all of the sound waves mashed together. This results in a higher-pitched sound in front of the vehicle and a lower-pitched sound behind.īut what happens if an object such as a fighter jet is flying faster than the speed of sound? In this case, the jet pushes ahead of the sound waves, and the waves compress into a dense “cone of sound” that spreads out behind the jet. Because sound waves travel at a constant speed in the air, the waves are compressed in front of the vehicle and stretched out behind the vehicle. If you are not signed into the correct account, use the following steps to sign into the correct account: Click or tap your profile icon in the upper-right corner. Your school should provide you with your email address and password. ![]() The Gizmo models sound waves being emitted from a moving vehicle. You may need to sign in to your student account. The answer can be found using the Doppler Shift Gizmo. A second after they pass, you finally hear the earth-shattering roar of their engines. The national anthem finishes, and just as the last note rings out, you are amazed to see five fighter jets flying overhead in tight formation.
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