Physics, 01.06.2021 05:30 rayray9471
Two people hear the 1700 hz siren of an ambulance. one person is in front and the other person is behind the ambulance. if the ambulance is travelling at 120 km/h, what is the difference in frequencies heard by the two people? the speed of sound is 333 m/s.
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Afaulty model rocket moves in the xy-plane (the positive y direction is vertically upward). the rocket's acceleration has components ax(t) = ? t2 and ay(t) = ? ? ? t, where ? = 2.50 m/s4 , ? = 9.00 m/s2 , and ? = 1.40 m/s3 . at t = 0 the rocket is at the origin and has velocity ~v0 = v0x ? i + v0y ? j with v0x = 1.00 m/s and v0y = 7.00 m/s. (a) calculate the velocity and position vectors as functions of time. (b) what is the maximum height reached by the rocket? (c) sketch the path of the rocket. (d) what is the horizontal displacement of the rocket when it returns to y = 0?
Answers: 1
Two people hear the 1700 hz siren of an ambulance. one person is in front and the other person is be...
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