Answer:It is always greater than the actual mechanical advantage because all machines must overcome friction. The mechanical advantage of a machine may be greater than, less than, or equal to 1, depending on the type of machine.
<h2> <em><u>•</u></em><em><u> </u></em><em><u>a.</u></em><em><u>)</u></em> <em><u>lithium </u></em></h2>
<h2><em><u>hope</u></em><em><u> it</u></em><em><u> helps</u></em></h2>
<u>Answer:</u> The binding energy for lithium-6 nuclei is 3.09 E+11
<u>Explanation:</u>
Binding energy is defined as the energy which holds the nucleus together. It is basically the product of mass defect and the square of the speed of light.
This energy is calculated by using Einstein's equation, which is:

where,
E = Binding energy of the atom
= Mass defect = 0.0343g/mol =
(Conversion factor:
)
c = speed of light = 
Putting values in above equation, we get:

(Conversion factor:
)
Hence, the binding energy for lithium-6 nuclei is 3.09 E+11
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