Answer:
a series of decays producing sequentially more stable nuclei
Explanation:
A nuclear decay chain represents a series of decays producing sequentially more stable nuclei.
- For every atomic nucleus, there is a specific neutron/proton ratio which ensures the stability of the nucleus.
- Any nucleus with a neutron/proton combination different from its stability ratio (i.e either too many neutrons or too many protons) will be unstable and split into one or more other nuclei with the attendant emission of small particles of matter.
- The decay process is a continuous chain reaction steps.
- Until stability of the nucleus is attain, it continues.
The soft underbelly of the axis is referred to as Italy. Hope this helps!
Answer:2987.7 J
Explanation:
Given
sled weight is 
Tension in rope 
Time interval 
velocity of sled 
here speed is equal to velocity which is constant therefore acceleration is zero
thus 
Distance traveled in 

considering surface to be friction less
thus
will do work on sled




0J
Explanation:
A wall that is acted upon by a force of 20N does not move suggests that no work has been done on the wall.
Work done is the force applied to move in the direction of the applied force.
Work done = force x distance.
Since the distance is 0, the work done on the body too is zero.
Work is only done when forces moves a body through a given distance.
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