From a vantage point very close to the track at a stock car race, you hear the sound emitted by a moving car. you detect a frequency that is 0.86 times as small as the frequency emitted by the car when it is stationary. the speed of sound is 343 m/s. what is the speed of the car?

55.8 m/s

Explanation:

= Actual frequency of sound emitted by car

= frequency observed when the car moves =

= Speed of sound = 343 m/s

= Speed of car

Frequency observed is given as

two charges are fixed in place on the x-axis as shown. the charge at x = 0 is negative and has magnitude q = 2 μcoulombs (1 μcoulomb = 10-6 coulombs). the charge at x = d, (d = +12 cm), is positive and has magnitude q = 4 μcoulombs. find a point x = xo along the x-axis at which the electric field is zero.

a displacement distance is size of displ