Answer:
I think it's fine besides one tiny mistake! Great job.
Explanation:
The first one you put a space than period. Make sure to put the period first then space.
<span>When you lift an object by moving only your forearm, the main lifting muscle in your arm is the biceps. Suppose the mass of a forearm is 1.10kg . If the biceps is connected to the forearm a distance dbiceps = 2.50cm from the elbow, how much force Fbiceps must the biceps exert to hold a 800g ball at the end of the forearm at distance dball = 37.0cm from the elbow, with the forearm parallel to the floor? How much force Felbow must the elbow exert</span>
Not too sure, but I think it’s the last option: This is a complex sentence because it joins an independent clause with a dependent clause