Answer:
1.125m/s^2
Explanation:
Since acceleration is defined as the rate of change in velocity with respect to time. Mathematically
v^2= u^2+2as
Where a,v,u and s are the acceleration, final velocity, initial velocity and distance respectively.
a = ? 
u = 0m/s
v = 15m/s
s = 100m
Substituting the values into the formula above
v^2= u^2+2as
15^2=0^2+2×a×100
225= 0+200a
225= 200a
Divide both sides by 200
225/200 = 200a/200
a= 1.125m/s^2
Hence the acceleration of the car is 1.125m/s^2.
Note that the car accelerated uniformly from rest, that was why the initial velocity was 0m/s
 
        
                    
             
        
        
        
normal force because it is perpendicular to the surface
 
        
             
        
        
        
Answer:
The required diagram is shown in the figure. When an object is placed in front of the convex lens, i.e., between 2F 
1
 
 and F 
1
 
 , its image is formed beyond 2F 
2
 
 on the other side of the lens. The image is real, inverted and enlarged.
solution
 
        
             
        
        
        
Answer:
Option d
The minimum angular separation between two objects that the Hubble Space Telescope can resolve is  .
.  
Explanation:
The resulting image in a telescope that will be gotten from an object is a diffraction pattern instead of a perfect point (point spread function (PSF)).
That diffraction pattern is gotten because the light encounters different obstacles on its path inside the telescope (interacts with the walls and edges of the instrument).
   
The diffraction pattern is composed by a central disk, called Airy disk, and diffraction rings.     
  
The angular resolution is defined as the minimal separation at which two sources can be resolved one for another, or in other words, when the distance between the two diffraction pattern maxima is greater than the radius of the Airy disk.
The angular resolution can be determined in analytical way by means of the Rayleigh criterion.          
 (1)
  (1)
Where  is the wavelength and D is the diameter of the telescope.
 is the wavelength and D is the diameter of the telescope. 
Notice that it is necessary to express the wavelength in the same units than the diameter. 
 ⇒
 ⇒  
 
Finally, equation 1 can be used.
 
 
 
               
Hence, the minimum angular separation between two objects that the Hubble Space Telescope can resolve is  .
.    
 
        
             
        
        
        
Answer:
While the causes of the bubble are disputed, the precipitating factor for the Financial Crisis of 2007–2008 was the bursting of the United States housing bubble and the subsequent subprime mortgage crisis, which occurred due to a high default rate and resulting foreclosures of mortgage loans, particularly adjustable. Hope this helps!
Explanation: