Are there choices?? i dont see any 
        
                    
             
        
        
        
Answer:
0.195 m
Explanation:
Speed is distance moved per unit time, expressed as s=d/t and making d the subject of the formula then d=st
Where d is distance/depth moved, s is rhe speed of waves and t is time in seconds.
Substituting s with 1300 m/s and t with 0.00015 s then the depth of metal segment will be
D=1300*0.00015=0.195 m
Therefore, the depth is equivalent to 0.195 m
 
        
             
        
        
        
Answer: 
Explanation:
Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.
The combined gas equation is,
 
where,
 = initial pressure of gas at STP = 1 atm
 = initial pressure of gas at STP = 1 atm
 = final pressure of gas = 2.67 atm
 = final pressure of gas = 2.67 atm
 = initial volume of gas =
 = initial volume of gas =  
 = final volume of gas = ?
 = final volume of gas = ?
 = initial temperature of gas at STP =
 = initial temperature of gas at STP =  
 = final temperature of gas =
 = final temperature of gas =  
Now put all the given values in the above equation, we get:
 

Thus the final volume will be 