Answer:
Kelvin
Explanation:
Kelvin is the universal and scientific unit for temperature as Celsius and Fahrenheit temperatures we use in everyday situations 
 
        
             
        
        
        
Lower. Water expands on lower temperatures, meaning less molecules in 1 m3, thus making it less dense
        
             
        
        
        
Answer:
first blank is chemical second blank is kinetic energy 
 
        
             
        
        
        
Answer:
the total momentum is 8 .2 kg m/s in north direction.
Explanation:
given,
mass(m₁) 3.00 kg, moving north at v₁ = 3.00 m/s
mass(m₂) 4.00 kg, moving south at v₂ =  3.70 m/s
mass(m₃) 7.00 kg, moving north at v₃ = 2.00 m/s
north as the positive axis
south as the negative axis
 now 
total momentum = m₁v₁ + m₂ v₂ + m₃ v₃ 
total momentum = 3 x 3 - 4 x 3.7 + 7 x 2
                            = 9 - 14.8 + 14
                            = 8 .2 kg m/s
hence, the total momentum is 8 .2 kg m/s in north direction.
 
        
             
        
        
        
We have that the spring constant is mathematically given as

Generally, the equation for angular velocity is mathematically given by

Where
k=spring constant 
And

Therefore

Hence giving spring constant k 

Generally 
Mass of earth 
Period for on complete resolution of Earth around the Sun


Therefore


In conclusion
The effective spring constant of this simple harmonic motion is

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