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2019年8月22日
Fire Engine Rescue
Engine 16 and Rescue 8 on a... - Albuquerque Fire Rescue
0:11
Engine 16 and Rescue 8 on a... - Albuquerque Fire Rescue
FacebookAlbuquerque Fire Rescue
已浏览 1328 次2024年2月10日
Planes: Fire and Rescue
Planes: Fire and Rescue
netflixreleases.com
2016年12月3日
The Pentheon rescue tools help you get... - Fire Engineering
1:02
The Pentheon rescue tools help you get... - Fire Engineering
FacebookFire Engineering
已浏览 6598 次2022年3月14日
热门视频
Salt Lake City Fire Dept. unveils state-of the art yellow-green fire truck
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Salt Lake City Fire Dept. unveils state-of the art yellow-green fire truck
Microsoft NewsKSTU FOX 13 Salt Lake City,
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Salt Lake City Fire Dept. unveils state-of the art yellow-green fire truck
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Salt Lake City Fire Dept. unveils state-of the art yellow-green fire truck
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Kandiyohi Fire Department gives fire truck to town in Mexico
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Fire Engine Siren
Sandy Fire EMS Response/Battalion Chief Ford Utility Vehicle
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Sandy Fire EMS Response/Battalion Chief Ford Utility Vehicle
FacebookSIRENNET
已浏览 884 次2018年4月17日
The siren of a fire engine that is driving northward at 30.0 m/s emits a sound of frequency 2000 Hz. A truck in front of this fire engine is moving northward at 20.0 m/s. (a) What is the frequency of the siren's sound that the fire engine's driver hears reflected from the back of the truck? (b) What wavelength would this driver measure for these reflected sound waves? | Numerade
The siren of a fire engine that is driving northward at 30.0 m/s emits a sound of frequency 2000 Hz. A truck in front of this fire engine is moving northward at 20.0 m/s. (a) What is the frequency of the siren's sound that the fire engine's driver hears reflected from the back of the truck? (b) What wavelength would this driver measure for these reflected sound waves? | Numerade
numerade.com
2019年11月12日
animated video of a fire engine with a blazing siren on a white background
0:16
animated video of a fire engine with a blazing siren on a white background
shutterstockNugroho Sri Hartono
7 个月之前
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