While driving down the road, you spot a friend standing on the sidewalk. you honk your horn at him while driving 60 km/h . your horn emits a frequency of 370 hz . part a what frequency does your friend hear as you approach? express your answer with the appropriate units. f f = nothing nothing request answer part b what frequency does your friend hear after you pass by?

Which is the best predictor of the radioactive nature of an isotope? o the proton-to-electron ratio the neutron-to-proton ratio o the neutron-to-electron ratio the electron-to-proton ratio

How to calculate voltage drop in a series circuit

Aproduction line at v. j. sugumaran's machine shop has three stations. the first station can process a unit in 7 minutes. the second station has two identical machines, each of which can process a unit in 16 minutes (each unit only needs to be processed on one of the two machines). the third station can process a unit in 10 minutes. ▼ is the bottleneck station, with a bottleneck time of nothing minutes per unit (enter your response as a whole number).