A baseball hits a car, breaking its window and triggering its alarm which sounds at a frequency of 1210 Hz. What frequency (in Hz) is heard by a boy on a bicycle riding away from the car at 7.15 m/s? Take the speed of sound to be 343 m/s.

Why should seat belts not be mandatory quick plz

The arrival of in the early days of europa’s existence could have formed its ocean. it is likely that the water experienced similar to earth. it is also possible that this water is retained beneath europa’s surface and in its atmosphere due to europa’s . 1.) a. precipitation b. water vapor c. icy debris 2.) a. gravitational compression b. biochemical cycling c. radiogenic heating 3.) a, gravity b. magnetic field c. heat energy for plato

What component of earth’s atmosphere exists entirely as a result of photosynthesis?