Fusion is harder to control than fission because A. hydrogen atoms are lighter than uranium atoms
B. U-235 is more common than hydrogen
C. fusion reactions require extremely high temperatures
D. hydrogen atoms are harder to break apart than U-235 atoms

In the derivation of rrkm theory, a factor of 1/2 is introduced when equalizing the rates of formation and decomposition of activated complex as keal-hr) = ko this is clearly against the assumption of transition state theory that states all the activated complex in the transition state iss going to the product. find the reason why this factor is introduced here.

What is the magnitude of the acceleration vector which causes a particle to move from velocity −5i−2j m/s to −6i+ 7j m/s in 8 seconds. answer in m/s.

Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.