Answer:
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Sound created in a big hall will persist by repeated reflection from the walls until it is reduced to a value where it is no longer audible. The repeated reflection that results in this persistence of sound is called reverberation. In an auditorium or big hall excessive reverberation is highly undesirable
Explanation:
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Answer:
Distancia = 17,5 kilómetros. 
Explanation:
Dados los siguientes datos; 
Velocidad = 36 km/h 
Tiempo = 0.5 horas 
Para encontrar la distancia recorrida; 
Distancia = velocidad * tiempo 
Distancia = 35 * 0.5 
Distancia = 17,5 kilómetros. 
Por tanto, la distancia recorrida por el automóvil es de 17,5 kilómetros.
 
        
             
        
        
        
Answer:
The musculoskeletal system involves the complex interactions of muscles, bones, and connective tissues.
When a muscle contracts, a bone will move. When a bone contracts, a muscle will move. When a ligament contracts, a tendon will move.
 
        
                    
             
        
        
        
Answer:
The speed of the two cars after coupling is 0.46 m/s.
Explanation:
It is given that,
Mass of car 1, m₁ = 15,000 kg
Mass of car 2, m₂ = 50,000 kg
Speed of car 1, u₁ = 2 m/s
Initial speed of car 2, u₂ = 0
Let V is the speed of the two cars after coupling. It is the case of inelastic collision. Applying the conservation of momentum as :


 
  
V = 0.46 m/s
So, the speed of the two cars after coupling is 0.46 m/s. Hence, this is the required solution.