Awhistle you use to call your hunting dog has a frequency of 21 khz, but your dog is ignoring it. you suspect the whistle may not be working, but you can't hear sounds above 20 khz. to test it, you ask a friend to blow the whistle and hop on his moped. in which direction should he ride (toward or away from you) to know if the whistle is working? explain in words or with a diagram
Answers: 2
Physics, 23.06.2019 00:00
Why should the wavelength scale of spectroscope be calibrated
Answers: 2
Physics, 23.06.2019 00:30
Which of the following statements are evidence that gases do not always behave ideally? check all that apply.? a. co2 gas becomes dry ice (solid co2) at 1 atm and ā78.5 Ā°c. b. when two gases are mixed, they follow dalton\'s law of partial pressures. c. at 4 k and 1 atm, helium is a liquid. d. it is impossible to compress a gas enough so that it takes up no volume.
Answers: 3
Physics, 23.06.2019 01:00
What electron configurations do atoms usually achieve by sharing electrons to form covalent bonds?
Answers: 3
Physics, 23.06.2019 01:30
At what time would the magnitude of the velocity reach 36.00 km/hr
Answers: 2
Awhistle you use to call your hunting dog has a frequency of 21 khz, but your dog is ignoring it. yo...
History, 16.07.2019 11:20
Biology, 16.07.2019 11:20
Geography, 16.07.2019 11:20
Mathematics, 16.07.2019 11:20
Biology, 16.07.2019 11:20
Mathematics, 16.07.2019 11:20
Biology, 16.07.2019 11:20
Chemistry, 16.07.2019 11:20
History, 16.07.2019 11:20