Acar speeds past you sounding its horn at a frequency of 1000hz. the frequency you hear:

f' =1064.1025 Hz

Explanation:

We know that from doppler's effect

f'= observed frequency

f= actual frequency =1000 Hz

v= velocity of sound waves = 332 m/s

v_o= velocity of observer =0

v_s= velocity of source. ( let velocity of car be 20 m/s)

therefore,

f' =1064.1025 Hz

the answer is neither ball has a charge.

because if they were both positively charged, they will repel each other.

if they were positively and negatively charged, they will seek.

where are the vectors ?