Can I get an answer please Explain and Show the mathematics of a lever's Mechanical Advantage.

What are some examples of Simple Machines we use in our everyday lives?

The mass flow rate of the fluid remains constant in all steady flow process. a)- true b)- false

Aflywheel accelerates for 5 seconds at 2 rad/s2 from a speed of 20 rpm. determine the total number of revolutions of the flywheel during the period of its acceleration. a.5.65 b.8.43 c. 723 d.6.86

The thermal expansion or contraction of a given metal is a function of the f a)-density b)-initial temperature c)- temperature difference d)- linear coefficient of thermal expansion e)- final temperature f)- original length