The mass of the rider and bicycle would be 35.7 and I’m assuming the unit would be kg so 35.7kg
<span> Balanced. If not so, then the car cannot move with uniform speed. The frictional force is balanced by the force exerted by the engine. </span>
<span>Dmitri Mendeleev is the person who </span>first arranged the elements according to atomic mass and noticed a periodic recurrence of their physical and chemical properties. The answer is letter D.
The ration of the rms speed of 235uf6 to that of 238uf6 is 1.004.
The molecular mass of 235uf6 is 349, while that of 238uf6 is 352.
The rms speed is calculated as
v=√(3RT/m)
Thus the ratio rms speed of 235uf6 to 238uf6 is calculated as
r=√(352/349)=1.004
