Answer:
F = 4000 N
Explanation:
given,
mass of rocket (M)= 5000 Kg
10 Kg gas burns at speed (m)= 4000 m/s
time = 10 s
average force = ?
at the end the rocket is at rest
by conservation of momentum
  M v + m v' = 0
  5000 x v - 10 x 4000 = 0
  5000 v = 40000
     v = 8 m/s
speed of rocket = 8 m/s
 now,
 we know
 change in momentum = F x Δ t
 

       F = 4000 N
Hence, the average force applied to the rocket is equal to F = 4000 N
 
 
        
                    
             
        
        
        
Answer is A) Fulcrum
The fixed point that a lever rotates around is called the fulcrum.
        
                    
             
        
        
        
Mass always stays the same therefore it can’t be c and d. Volume stays the same because she is not removing anything. Therefore it is a
        
                    
             
        
        
        
Explanation:
Hey there! 
Here,
Pascal  is a unit of pressure. 

Now, As per the formula the units are:
kg, m and s^2.
<em><u>Hope it helps</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>
 
 
        
             
        
        
        
Answer:
The direction a wave propagates is perpendicular to the direction it oscillates for transverse waves. A wave does not move mass in the direction of propagation; it transfers energy.
Explanation: