Answer:
Nuclear reaction is a reaction in which nucleus of the atom undergoes a change.
Nuclear fusion is a process which involves the conversion of two small nuclei to form a heavy nuclei along with release of energy.
Example : 
Nuclear fission is a process which involves the conversion of a heavier nuclei into two or more small and stable nuclei along with the release of energy.
Example: 
Answer:
15.03 m
Explanation:
Given:
mass of the block, m = 7.25 kg
Angle, Θ = 28.5°
Initial speed of the block, v₀ = 15 m/s
let the distance traveled by the block be 's'
Now, applying the work energy theorem,
we have
on substituting the values in the above equation, we get
or
or
s = 15.03 m
Hence, the block will travel 15.03 m up the ramp
Answer:
Because on different surfaces there's more/less friction. Smooth surfaces will allow the duster to accelerate while rough surfaces will decrease the acceleration.
Absence of chemical energy in the body, can and will eventually lead to death.
