Answer:
Time = 0.58 seconds
Explanation:
Given the following data;
Initial momentum = 3 kgm/s
Final momentum = 10 kgm/s
Force = 12 N
To find the time required for the change in momentum;
First of all, we would determine the change in momentum.


Change in momentum = 7 kgm/s
Now, we can find the time required;
Note: the impulse of an object is equal to the change in momentum experienced by the object.
Mathematically, impulse (change in momentum) is given by the formula;

Making "time" the subject of formula, we have;

Substituting into the formula, we have;

Time = 0.58 seconds
 
        
             
        
        
        
<span>Find an activity you enjoy and make it a priority in your schedule.</span>
        
             
        
        
        
The question is oversimplified, and pretty sloppy.
Relative to the Earth . . . 
The Moon is in an elliptical orbit around us, with a period of 
27.32... days, and with the Earth at one focus of the ellipse.
Relative to the Sun . . .
The Moon is in an elliptical orbit around the Sun, with a period 
of 365.24... days, and with the Sun at one focus of the ellipse, 
and the Moon itself makes little dimples or squiggles in its orbit 
on account of the gravitational influence of the nearby Earth.
I'm sorry if that seems complicated.  You know that motion is 
always relative to something, and the solar system is not simple.
        
                    
             
        
        
        
Answer:

Explanation:
First of all let's define the specific molar heat capacity.
 (1)
 (1)
Where:
Q is the released heat by the system
n is the number of moles
ΔT is the difference of temperature of the system  
Now, we can find n with the molar mass (M) the mass of the compound (m).
 
       
Using (1) we have:


I hope it helps!
 
        
             
        
        
        
Answer:
Explanation:
1. Impulse, I = F.t
   The statement impulse is the product of Force and distance is false.
2. F = m g
    Force necessary to lift the object depends on the mass of the object.
    statement 2 is false.
3. Joule is equal to Newton times meter.
     Statement 3 is false.
4. Work done to lift an object is correct statement.
    Statement 4 is true.
5. Kinetic energy of an object is due to motion.
   Statement 5 is false.
6. Stopping distance is directly proportional to the square of velocity.
      If velocity is doubled, stopping distance is quadrupled.
     Statement 6 is false.