An object has an acceleration of a=300m/s/s. What statement is true * A)The object will reach v=300m/s
B)We will only be able to tell the speed it reaches by knowing the time it is accelerating for

Because the sun is the biggest and if the sun orbits the earth we will be dead probably

It really doesn't matter for any of the questions that you've listed.

If the heat engine is a perfect carnot cycle engine, thenefficiency = (t2-t1)/t2   where t1=temperature of cold reservoir ( ° k) = 135            t2=temperature of hot reservoir ( ° k)   = 325thereforeefficiency = (t2-t1)/t2 = (325-135)/325 = 0.5846 = 58%  note: this is the theoretical maximum efficiency of a perfect heat engine.   real-life engines do not achieve this value.

Phagocytes contain digestive enzymes to facilitate the process of phagocytosis