Acompact disc has a radius of 6 centimeters.
a. what is its circumference in meters?
b. if the cd rotates 4 times per second, what is the linear speed of a point on the outer edge of the cd? give your answer in meters per second.
c. what is the linear speed of a point 3 centimeters from the center of the cd? (assume the angular speed has not changed).

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.

How are the crust and the inner core alike? a) they are both solid. b) they both have the same temperature. c) they are both under the same pressure. d) they are both very close to the center of the earth.

1. jay fills a wagon with sand (about 20 kg) and pulls it with a rope 30 m along the beach. he holds the rope 25° above the horizontal. the rope exerts a 20-n tension force on the wagon. how much work does the rope do on the wagon?