Uranium-238 undergoes alpha decay. In addition to the alpha particle, which isotope forms?
238 U - ? + 4 2 He
A. 234 Pu
92
B. 242 Pu
94
C. 234Th
90
D. 242Th
94
the answer is c

An experiment is designed to test the relationship between the initial height of a basketball before it is dropped to the height of its rebound bounce. the height of the rebound bounce is measured using a scale positioned behind the ball. in the above experiment, which condition would not be controlled? a). the starting height of the ballb). the surface the ball bounces on c). the type of ball d). the method to measure the rebound height of the ball

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.

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.