You are driving at 75 km/h. your sister follows in the car behind at 75 km/h. when you honk your horn, your sister hears a frequency you are driving at 75 . your sister follows in the car behind at 75 . when you honk your horn, your sister hears a frequency lower than the frequency you hear. higher than the frequency you hear. the same as the frequency you hear. you cannot tell without knowing the horn's frequency.

Which sound characteristic is not affected by the relative motion of an object

Abar magnet cut in half will form a total ofpoles. a)fourb)eightc)two

Suppose a force of 60 n is required to stretch and hold a spring 0.1 m from its equilibrium position. a. assuming the spring obeys hooke's law, find the spring constant k. b. how much work is required to compress the spring 0.5 m from its equilibrium position? c. how much work is required to stretch the spring 0.6 m from its equilibrium position? d. how much additional work is required to stretch the spring 0.1 m if it has already been stretched 0.1 m from its equilibrium? a. kequals 600