Answer:
The  value is  
Explanation:
From the question we are told that 
    The volume of  liquid nitrogen is  
    The  density of  nitrogen at gaseous form   is   =  The dry air at sea level
  =  The dry air at sea level
     
Generally the density of nitrogen at liquid form is  
          
And this is mathematically represented as
       
=>   
Now the density of  gaseous nitrogen is 
        
=>   
Given that the mass is constant 
        
         
=>   
        
 
        
             
        
        
        
The force that holds the gases in the sun. The force that causes a ball you throw in the air to come down again
        
             
        
        
        
Answer:
The answer is given below
Explanation:
u is the initial velocity, v is the final velocity. Given that:

a)
The final velocity of cart 1 after collision is given as:

The final velocity of cart 2 after collision is given as:

b) Using the law of conservation of energy:

 
        
             
        
        
        
Answer:
Distance, d = 0.1 m
It is given that,
Initial velocity of meson, 
Finally, the meson is coming to rest v = 0
Acceleration of the meson,  (opposite to initial velocity)
Using third equation of motion as :
s is the distance the meson travelled before coming to rest.
So, 
  
s = 0.1 m
The meson will cover the distance of 0.1 m before coming to rest. Hence, this is the required solution.