Answer:
13.1
Explanation:
that's what I'm gonna go with, but u can research more
 
        
             
        
        
        
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
 and 


frequency corresponding to this is 

for 


Frequency corresponding to this wavelength

 
                         
 
        
             
        
        
        
Answer:
 ΔE> E_minimo
We see that the field difference between these two flowers is greater than the minimum field, so the bee knows if it has been recently visited, so the answer is if it can detect the difference
Explanation:
For this exercise let's use the electric field expression
          E = k q / r²
where k is the Coulomb constant that is equal to 9 109 N m² /C², q the charge and r the distance to the point of interest positive test charge, in this case the distance to the bee
let's calculate the field for each charge
  
Q = 24 pC = 24 10⁻¹² C
          E₁ = 9 10⁹ 24 10⁻¹² / 0.20²
          E₁ = 5.4 N / C
Q = 32 pC = 32 10⁻¹² C
          E₂ = 9 10⁹ 32 10⁻¹² / 0.2²
          E₂ = 7.2 N / C
let's find the difference between these two fields
          ΔE = E₂ -E₁
          ΔE = 7.2 - 5.4
          ΔE = 1.8 N / C
the minimum detection field is
          E_minimum = 0.77 N / C
         ΔE> E_minimo
We see that the field difference between these two flowers is greater than the minimum field, so the bee knows if it has been recently visited, so the answer is if it can detect the difference
 
        
             
        
        
        
The volume decreases, by a factor of
(the original pressure/(125 kPa).