Physics, 26.02.2020 00:30 pineapplepizaaaaa
You are standing on a train station platform as a train goes by close to you. As the train approaches, you hear the whistle sound at a frequency of f1 = 95 Hz. As the train recedes, you hear the whistle sound at a frequency of f2 = 78 Hz. Take the speed of sound in air to be v = 340 m/s.
a) Find an equation for the speed of the sound source vs., in this case it is the speed of the train. Express your answer in terms of f1, f2 and v.
Answers: 3
Physics, 21.06.2019 19:00
Aman tries to push a box of mass 4 kg with a force of 5 n but the box remains stationary if the coefficient of static friction is 0.45, what is the value of the maximum force of friction?
Answers: 2
Physics, 21.06.2019 23:30
Aknife blade is a(n) a. lever b. screw c. wedge d. inclined plane
Answers: 2
Physics, 22.06.2019 01:30
Answer as quick as ! kate is working on a project in her tech education class. she plans to assemble a fan motor. which form of energy does the motor convert most of its electric energy into? a. light energyb. motion energyc. sound energyd. thermal energy
Answers: 3
You are standing on a train station platform as a train goes by close to you. As the train approache...
Biology, 30.07.2019 10:00
English, 30.07.2019 10:00
Mathematics, 30.07.2019 10:00
History, 30.07.2019 10:00
Computers and Technology, 30.07.2019 10:00
English, 30.07.2019 10:00
Arts, 30.07.2019 10:00
History, 30.07.2019 10:00
Mathematics, 30.07.2019 10:00
History, 30.07.2019 10:00
Advanced Placement (AP), 30.07.2019 10:00