The correct answer to the question is : A) The velocity of the cart after it hits the wall.
EXPLANATION:
Before answering this question, first we have to understand impulse.
Impulse of a body is defined as the change in momentum or the product of force with time.
Mathematically impulse = m ( v- u ).
Here, v is the final momentum and u is the initial momentum.
Hence, we need the velocity of the cart after it hits the wall in order to calculate the impulse of the lab cart.
 
        
                    
             
        
        
        
Answer:
 g = 8.61 m/s²
Explanation:
distance of the International Space Station form earth is 200 Km
mass of the object = 1 Kg
acceleration due to gravity on earth = 9.8 m/s²
mass of earth = 5.972 x 10²⁴ Kg
acceleration due to gravity = ?
r = 6400 + 200 = 6800 Km = 6.8 x 10⁶ n
using formula 
  
  
         g = 8.61 m/s²
 
        
             
        
        
        
The quantity of matter in a body regardless of its volume or of any forces acting on it.
        
             
        
        
        
Answer:
mgh₁ + ½mv₁² = mgh₂ + ½mv₂²
Explanation:
Initial total energy = final total energy
PE₁ + KE₁ = PE₂ + KE₂
mgh₁ + ½mv₁² = mgh₂ + ½mv₂²
 
        
             
        
        
        
The wavelength of the light beam required to turn back all the ejected electrons is 497 nm which is option (b).
- Work function is a material property defined as the minimum amount of energy  required to infinitely remove electrons from the surface of a particular solid.
-  The potential difference required to support all emitted electrons is called the stopping potential which is given by  .....(1) .....(1)
- where  is the stopping potential and e is the charge of the electron given by is the stopping potential and e is the charge of the electron given by . .
It is given that work function (Ф) of monochromatic light is 2.50 eV.
Einstein photoelectric equation  is given by:
  ....(2)
      ....(2)
where K.E(max) is the maximum kinetic energy.
Substituting (1) into (2) , we get
   
As we know that  ....(3)
  ....(3) 
where Speed of light, and Planck's constant ,
 and Planck's constant , 
From equation (3) , we get

Learn about more einstein photoelectric equation  here:
brainly.com/question/11683155
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