Clarify what you mean by ratios?
        
             
        
        
        
Answer:
The initial velocity was U=22.14m/s
Explanation:
Step one :
Applying the third equation of motion 
v² = u²+ 2as
Where v= Final velocity 
U =initial velocity 
a= acceleration due to gravity 
S= distance or displacement 
Step two :
V= 0
a= 9.81m/s²
S=25m
U=?
Step three :
Substituting into the equation we have 
0²=U²+2*9.81*25
0=U²+490.5
U²=-490.5
U=√490.5
U=22.14m/s
 
        
             
        
        
        
V = IR
By completing the equation, i found that the total power equation is : 4.8, 
Which means that it's not exceed the power rating.
So i believe the answer would be :  The string will remain lit
hope this helps
        
             
        
        
        
Answer:
ω = 380π rad/s
Explanation:
The formula for the angular frequency is the oscillation frequency f (hertz) multiplied by 2π
ω = 2πf
then
ω = 2π(190)
ω = 380π rad/s
 
        
             
        
        
        
Answer: A river delta is a landform created by deposition of sediment that is carried by a river as the flow leaves its mouth and enters slower-moving or stagnant water. This occurs when a river enters an ocean, sea, estuary, lake, reservoir, or (more rarely) another river that cannot carry away the supplied sediment. The size and shape of a delta is controlled by the balance between watershed processes that supply sediment.