An echo 
Refraction 
Diffraction 
Transmission 
reflection
        
             
        
        
        
Answer:
<h2>89,460 g</h2>
Explanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volume
From the question we have
mass = 8.52 × 10,500 
We have the final answer as
<h3>89,460 g</h3>
Hope this helps you
 
        
             
        
        
        
Answer:
When a candle was blown out, the flame stops immediately but the wick and the wax are both still hot, so pyrolysis continues for a few seconds. Explanation:
 
        
             
        
        
        
Answer:
   W / A = 39200 kg / m²
Explanation:
For this problem let's use the equilibrium equation of / newton
            F = W
Where F is the force of the door and W the weight of water
          W = mg
We use the concept of density
         ρ = m / V
         m = ρ V
The volume of the water column is
           V = A h
We replace
          W = ρ A h g
On the other side the cylinder cover has a pressure
           P = F / A
           F = P A
 We match the two equations
        P A = ρ A h g
         P = ρ g h
         P = 39200 Pa
The weight of the water column is
        W  = 1000 9.8 4 A
        W / A = 39200 kg / m²
 
        
             
        
        
        
Newton is your answer.
ampere, second, kilograms, are all base units.
hope this helps