The factor that most affects the flow of ocean currents is B. differences in temperaturethreAnswer here
(C) the government agency that regulates these types of chemicals
Answer:
Explanation:
Given
Distance between two loud speakers 
Distance of person from one speaker 
Distance of person from second speaker 
Path difference between the waves is given by

for destructive interference m=0 I.e.




frequency is given by

where 

For next frequency which will cause destructive interference is
i.e.
and 


frequency corresponding to this is

for 


Frequency corresponding to this wavelength

Answer:no it is staying the same speed
Explanation:
Life Expectancy Was Shorter
Trains were faster to ride
The population explosion was not as on date