Complete Question 
An airplane takes off a runway at a constant speed of 49 m/s at constant angle 30 to the horizontal.How high (in meters )  is the airplane above the ground 13 seconds after takeoff?
Answer:
The height  is 
Explanation:
From the question we are told that 
    The speed at which the plane takes off is  
       The angle at which it takes off is  
         The time taken is 
The vertical distance traveled is  mathematically represented as
           
Substituting values   
          
         
 
        
             
        
        
        
Answer:
1.06 secs
Explanation:
Initial speed of sled, u = 8.4 m/s
Final speed of sled, v = 5.8 m/s
Coefficient of kinetic friction, μ = 0.25
Using the impulse momentum theory, we know that the impulse applied to the sled is equal to change in momentum of the sled:
 FΔt = mv - mu
where m = mass of the object
Δt = time interval
F = force applied 
The force applied on the sled is the frictional force, which is given as:
F = -μmg
where g = acceleration due to gravity
Therefore:
-μmgΔt =  mv - mu
-μmgΔt = m(v - u)
-μgΔt = v - u
Making Δt subject of formula:
Δt = (v - u) / -μg
Δt = (5.8 - 8.4) / (-0.25 * 9.8)
Δt = -2.6/ -2.45
Δt = 1.06 secs
It took the sled 1.06 secs to travel from A to B.
 
        
             
        
        
        
Answer:
The  corresponding  magnetic field is  
Explanation:
From the question we are told that 
     The electric field amplitude is  
     
Generally the  magnetic  field amplitude is  mathematically represented as 
               
Where c is the speed of light with a constant value 
          
So   
         
          
Since 1  T  is  equivalent to  
          
 
        
             
        
        
        
Your blood runs through your blood stream, every vein in your body. without that heartbeat the blood would not make it to the required places it needs to run to and you will lose oxygen and parts of your body and organs will shut down.
        
             
        
        
        
Answer:
Explanation:
The car is rolling without slipping so Vcm= R×ω = 0.325×49 = 16