Answer:
C
Explanation:
Gravity is the main reason that make our planets to pull each other
 
        
             
        
        
        
Answer:
 D = 2.38 m
Explanation:
This exercise is a diffraction problem where we must be able to separate the license plate numbers, so we must use a criterion to know when two light sources are separated, let's use the Rayleigh criterion, according to this criterion two light sources are separated if The maximum diffraction of a point coincides with the first minimum of the second point, so we can use the diffraction equation for a slit
          a sin θ  = m λ
 Where the first minimum occurs for m = 1, as in these experiments the angle is very small, we can approximate the sine to the angle
            θ = λ / a
Also when we use a circular aperture instead of slits, we must use polar coordinates, which introduce a numerical constant
            θ = 1.22 λ / D
Where D is the circular tightness
        
Let's apply this equation to our case
          D = 1.22 λ /  θ
To calculate the angles let's use trigonometry
          tan  θ = y / x
           θ = tan⁻¹  y / x
           θ = tan⁻¹ (4.30 10⁻² / 140 10³)
           θ = tan⁻¹ (3.07 10⁻⁷)
           θ = 3.07 10⁻⁷ rad
Let's calculate
         D = 1.22 600 10⁻⁹ / 3.07 10⁻⁷
         D = 2.38 m
 
        
                    
             
        
        
        
Answer:

Explanation:
Given that,
The compression in the spring, x = 0.0647 m
Speed of the object, v = 2.08 m/s
To find,
Angular frequency of the object.
Solution,
We know that the elation between the amplitude and the angular frequency in SHM is given by :

A is the amplitude
In case of spring the compression in the spring is equal to its amplitude



So, the angular frequency of the spring is 32.14 rad/s.
 
        
             
        
        
        
GPE= 70.56 J -------------------> GPE= mgh-------------> X= height
70.56 = 6(kg) * 9.8(m/s/s) * X
70.56 = 58.8X
70.56/58.8= 58.8X/58.8
X= 1.2
The height is 1.2 feet or meters (whatever unit you are using in this problem)