The siren of a police car at rest emits at a predominant frequency of 1980 hz. what frequency will you hear if you are at rest and the police car moves at 34.3.0m/s (a) toward you, and (b) away from you? explain

If jill was traveling at 300 miles in 4 hours due south what was his velocity in miles per minute a) 75 miles per hour due south b) .02 miles per second due south c) .5 miles per second due south d) 1 mile per hour due south

When applying kirchhoff's rules, one of the essential steps is to mark each resistor with plus and minus signs to label how the electric potential changes from one end of the resistor to the other. the circuit in the drawing contains four resistors, each marked with the associated plus and minus signs. however, one resistor is marked incorrectly. which one is it?

What is the most useful equation for electric power?