Answer:
The answer is " "
"
Explanation:
The formula for velocity:

       
 
        
             
        
        
        
Answer:
 = 40 cm
 = 40 cm 
Explanation:
given data 
string length = 30 cm 
solution
we take here equation of length that is 
L =  ...............1
     ...............1
so 
total length will be here 


so  will be
  will be 

 = 40 cm
 = 40 cm 
 
        
             
        
        
        
Answer:
False
Explanation:
Paleobotany is the study of fossil plants.
 
        
                    
             
        
        
        
Acceleration formulae is:
a=Fnet/mass
According to the question 
a=7500N/1500kg
a=5m/s sq.
        
             
        
        
        
Answer:
When waves overlap in-phase (crest meets crest or trough meets trough) the waves energy is additive and the amplitude increases.
Explanation:
 When waves overlap out-of-phase (crest meets trough) the waves cancel and the amplitude (energy) decreases. When two interfering waves cancel each other out.