Answer:
Explanation:
Given
Two springs with spring constant
and 
(a)If they are stretched using the same force
Force 
where
and
are the extension in the spring
so 
therefore 
Work done is given by



thus 
(b)If they are stretched the same distance

Thus 
For same extension, work done by Force 1 is more
Answer:
Under normal conditions, a magnetic material like iron doesn't behave like a magnet because the domains don't have a preferred direction of alignment. On the other hand, the domains of a magnet (or a magnetized iron) are all aligned in s specific direction.
Velocity = The speed and direction that an object is moving at
Answer:
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