Q: In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
The period of a spring is given by two pi times the square root of this quantity over the spring constant. Heat transfer is equal to the specific heat times the change in temperature times this quantity. A "rest" type is multiplied by the square of the speed of light to give energy. For 10 points, name this quantity that is the "m" in "E equals m c squared."
A:
Science