Spring C stretches 100 cm.
Explanation:
The spring constant is simply the stiffness of the spring. The higher the spring constant the more stiff the spring is. 
Spring constant shows the force needed to stretch a spring from it's equilibrium position. If a material requires more force to cause it to stretch, it will have a high spring constant. 
           According to hooke's law "the force needed to extended an elastic material is directly proportional to its extension"
           F = ke 
    k is the spring constant
    e is the extension
We see that the spring that stretches by 100 is the less stiff compared to other springs. It has the smallest spring constant. 
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Force = mass × acceleration 
To find acceleration, we can divide the speed by the time it took:
acceleration = 2.40×10^7 / 1.8×10^-9 
acceleration = 1.33×10^16 
the mass is equal to the mass of an electron 
force = (9.11×10^-31)(1.33×10^16)
force = 1.21×10^-14 N
        
             
        
        
        
Answer:
Energy stored in the capacitor will be 
Explanation:
We have given edge length of capacitor = 
So area A = 1.2×1.2 = 1.44 
Separation is given as d  1 mm = 
We know that capacitance is given by 
Voltage is given as V = 12 volt 
We know that energy stored is given by 
 
        
                    
             
        
        
        
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Answer:
= 4.38 × 10³⁴kgm²/s
Explanation:
Given that,
mass of moon m = 9.5 × 10²²kg
Orbital radius r = 4.28  × 10⁵km
Orbital period  T = 28.9days
T = 28.9  × 24 × 60 × 60
    = 2,496,960s
Angular momentum of the moon about the planet 
L = mvr
L = mr²w
