<span>Crystallization, metamorphism, and erosion and sedimentation.<span>Any rock can transform into another rock by passing through one or more of these processes.
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Answer:
Part(a): The final angular velocity is 
Part(b): The ratio of the rotational energies is 
,showing the the energy of th system will decrease.
Explanation:
Part(a):
If '
' be the moment of inertia of an object and '
' be its angular velocity then the angular momentum '
' of the object can be written as
If '
' and '
' be the moment of inertia of the two cylinders and '
' and '
' be the initial angular velocity of the cylinders and '
' and '
' be their respective final angular velocity, then from conservation of angular momentum,
Given, 
. From the above expression
Part(b):
Initial kinetic energy
and Final kinetic energy
Substituting the value of 
,
The above expression shows that the ebergy of the system will decrease.
Answer:
In physics, motion is the change in the position of an object over time. Motion is mathematically described in terms of displacement, distance, velocity, acceleration, speed, and time. The motion of a body is observed by attaching a frame of reference to an observer and measuring the change in position of the body relative to that frame.
- Sophia
Answer:
1st one
identity of the H₂O
When water (H2O) freezes into ice, some of the properties have changed but the identity of the H2O is the same. Explanation; Water can exist in liquid, solid; ice and gaseous state; steam. Freezing occurs when water is continuously cool until it turns to solid ice, water freezes at zero degree Celsius
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