A man is traveling on a bicycle at 14 m/s along a straight road that runs parallel to some railroad tracks. He hears the whistle of a train that is behind him. The frequency emitted by the train is 840 Hz, but the frequency the man hears is 778 Hz. Take the velocity of sound to be 340 m/s.
a) What frequency is heard by a stationary observer located between the train and the bicycle?
b) What is the speed of the train, and is the train traveling away from or towardthe bicycle?
Answers: 3
Physics, 21.06.2019 13:10
An unknown substance has a melting point of 1064 ∘c, is insoluble in water, conducts electricity as a solid, and is hard. given these properties, which of the following are possible identities for the unknown substance? check all that apply. view available hint(s) check all that apply. sio2 f2 au kbr
Answers: 3
Physics, 22.06.2019 09:30
Astone is dropped from a cliff and falls 9.44 meters. what is the speed of the stone when it reaches the ground? a. 13.6 m/sec b. 1.39 m/sec c. 185 m/sec d. 9.80 m/sec
Answers: 3
Physics, 22.06.2019 15:50
If the work required to stretch a spring 3 ft beyond its natural length is 15 ft-lb, how much work is needed to stretch it 27 in. beyond its natural length?
Answers: 1
A man is traveling on a bicycle at 14 m/s along a straight road that runs parallel to some railroad...
Mathematics, 31.01.2020 01:56
History, 31.01.2020 01:56
Chemistry, 31.01.2020 01:56
English, 31.01.2020 01:56
Mathematics, 31.01.2020 01:56
Geography, 31.01.2020 01:56
Mathematics, 31.01.2020 01:57
History, 31.01.2020 01:57
Mathematics, 31.01.2020 01:57
Physics, 31.01.2020 01:57