Physics, 16.10.2021 01:00 tylerchitwood211
Một xe xuất phát lúc 9 giờ 30 phút , chuyển dộng thẳng đều từ A đến B với vận tốc 40 km/h
Answers: 1
Physics, 22.06.2019 01:30
Ajet plane has a sound level of 120 db at a distance of 60 m. what is the q23. sound level at a distance of 6.0 km? (60)2 (6000)? om solution 80db db, hint: 16x assume ultrasound waves travel through the body of an animal at 1540 q24. m/s. if a 30,000 hz signal were reflected off a portion of a heart which was moving toward the source at 3 m/s, what frequency signal would return to the stationary source? solution 30.117hz
Answers: 3
Physics, 22.06.2019 12:30
What would be the strength of earth's gravitational field at a point where an 80.0 kg astronaut would experience a 80% reduction in weight
Answers: 3
Một xe xuất phát lúc 9 giờ 30 phút , chuyển dộng thẳng đều từ A đến B với vận tốc 40 km/h...
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