Why should you not use emery cloth for polishing the commutator of an appliance motor? a. it wears the surface too much. b. its dust conducts electricity. c. it fails to remove oily, discolored spots. d. its material reacts chemically with copper.

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.

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?

Assume this car is driven off a cliff . how many arrows of force need to be drawn in the free body diagram? assume no air resistance -five -one -three -four