Answer:
The total momentum of a system is conserved only when the system is closed.
Explanation:
They can be described as small in quantity and very dangerously radioactive.
Acceleration due to gravity is about 9.8 m/s²
So after every second, the speed increase by 9.8 m/s
After 1 second, the object would fall at a speed of 9.8 m/s
After 2 seconds the object would fall at a speed of 19.6 m/s
So after 4 seconds, the object is going to be at a speed of:
9.8 x 4 = 39.2 m/s
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<u>Answer</u>
39.2 m/s
Answer:
The extent to which it would stretch is 
Explanation:
From the question we are told that
The initial length is 
The area is 
The Young modulus of the steel is 
The tension is 
The Young modulus is mathematically represented as

Where
is the stress which is mathematically represented as
Substituting values
And e is the strain which is mathematically represented as

Where
The extension of the steel string
Substituting these into the equation above

Substituting values



Particles begin to move out of their ordered arrangement due to energy. They are unable to escape because of external pressure pushing down on the liquid.