New oceanic lithosphere forms as a result of a. sea-floor spreading. c. reverse polarity. b. normal polarity. d. continental drift.

Iron reacts with sulfur to form iron sulfide. if 60 grams of iron reacts with sulfur to produce 90 grams of iron sulfide, how much sulfur has been used in the chemical reaction?

Alarge box of mass m is pulled across a horizontal frictionless surface by a horizontal rope with tension t. a small box of mass m sits on top of the large box. the coefficients of static and

What is the increase in density of a medium due to wave travel?