Adriver travels northbound on a highway at a speed of 20.0 m/s. a police car, traveling southbound at a speed of 43.0 m/s, approaches with its siren producing sound at a frequency of 2600 hz. (a) what frequency does the driver observe as the police car approaches?
hz
(b) what frequency does the driver detect after the police car passes him?

(c) repeat parts (a) and (b) for the case when the police car is traveling northbound. while police car overtakes
after police car passes

Which of the following is an example of units for speed

Imagine an isolated positive point charge q (many times larger than the charge on a single proton). there is a charged particle a (whose charge is much smaller than charge q) at a distance from the point charge q. on which of the following quantities does the magnitude of the electric field created by charge q at particle a's position depend? check all that apply. the type of the charge on the charged particle athe relative orientation between q and a (while the distance between q and a is fixed)the specific location of the charged particle a (while the distance between q and a is fixed)the amount of the charge on the point charge qthe specific location of the point charge q (while the distance between q and a is fixed)the distance between the point charge q and the charged particle athe amount of the charge on the charged particle a

What is the relationship between globular clusters and the milky way?