Astone falls from a ledge and takes 8 seconds to hit the ground. the stone has an original velocity of 0 m/s. how tall is the ledge? a. 313.6 meters b. 78.4 meters c. 39.2 meters d. 1,254.4 meters

Which statement is true for light passing into a medium that is more optically dense than the first medium through which it past

Aboxcar traveling at 12 m/s approaches a string of 5 identical boxcars sitting stationary on the track. the moving boxcar collides and links with the stationary cars and they all move off together along the track. what is the final speed of the cars immediately after the collision? (you may take the mass of each boxcar to be 18,537 kg.)

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.