Answer:

Explanation:
As we know that thermal expansion coefficient of aluminium is given as

now we also know that after thermal expansion the final length is given as

here we know that



now we will have


The letter “j” is never found on the periodic table. As for numbers, there’s an infinite amount
A bolt, all these besides bolt are a combo of simple machines
Answer:
When the muscle is completely contract.
Explanation:
Remember the that maximum force of a muscle is when is completely contract. A characteristic of a muscle is that can contract and can relax in the opposite direction. In this way, when all the microfibers of the muscle are join together (they are contract) is when the maximum tissue force is applied.
With exercise the fibers of the muscles can grow or reproduce to strength the muscle.