Two birds move away from each other. Their speeds with respect to the air are equal. One bird calls the other with a note of frequency 550 Hz. The other bird hears the note with a frequency of 450 Hz. The speed of sound in the air is 350 m/s. How fast is each bird moving with respect to the air
Answers: 1
Another question on Physics
Physics, 22.06.2019 05:20
Which statement is true? a. kepler's laws apply only to the motion of earth. b. kepler's laws can be used to predict eclipses. c. kepler's laws are true for a central force that is directly proportional to distance. d. kepler's laws can be deduced from newton's laws of motion and gravity.
Answers: 2
Physics, 22.06.2019 05:30
Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?
Answers: 1
Physics, 22.06.2019 10:00
**urgent** roberto plans to use two transformers to reduce a voltage of 120 v to 4 v. he uses a transformer that has 300 coils in the primary winding and 50 coils in the secondary winding. he has four other transformers, as listed in the table. which transformer should roberto use to have an ending voltage of 4 v? a- w b-xc- yd- z
Answers: 1
Physics, 22.06.2019 17:30
Alarge cruise ship of mass 7.00 ✕ 107 kg has a speed of 11.6 m/s at some instant. (a) what is the ship's kinetic energy at this time? (b) how much work is required to stop it? (give the work done on the ship. include the sign of the value in your answer.) (c) what is the magnitude of the constant force required to stop it as it undergoes a displacement of 3.00 km?
Answers: 2
You know the right answer?
Two birds move away from each other. Their speeds with respect to the air are equal. One bird calls...
Questions
Mathematics, 27.02.2021 02:30
Mathematics, 27.02.2021 02:30
Mathematics, 27.02.2021 02:30
Mathematics, 27.02.2021 02:30
Mathematics, 27.02.2021 02:30
Mathematics, 27.02.2021 02:30
Mathematics, 27.02.2021 02:30
