Answer:

Explanation:
As we know by the law of diffraction through circular aperture

here we know that
a = diameter of the aperture
 = diffraction angle
 = diffraction angle
 = wavelength
 = wavelength
now we have

Now in order to find the wavelength we know



now we have



 
        
             
        
        
        
Answer:
21
Explanation:
Weight on the moon is 16.5 % of weight on earth
Weight on moon = 0.165 * 130
Weight on moon = 21 lbs
 
        
             
        
        
        
Answer:
they differ each other bc it is a lot of with earth quakes and everything.
Explanation:
 
        
             
        
        
        
Explanation:
When,the vehicle has uniform velocity, it's acceleration becomes zero
 
        
             
        
        
        
The deceleration of the rocket sled if it comes to rest in 1.1 s from a speed of 1000 km/h is   .
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The acceleration in opposite direction is known as the deceleration. Basically the deceleration is negative value of the acceleration since the negative sign depicts its opposite in direction.
The given data:
time, t = 1.1 s
initial speed, u = 1000 km/h = 
final speed, v = 0 m/s
So we will be using the equation of motion, that is,
v = u + at



Hence , the deceleration of the rocket is   .
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