What is sign of dw-dt for t while stack of paper is burning

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Question: Suppose w is the weight of a stack of papers in an open container, and t is time. A lighted match is thrown into the stack at time t = 0.

(a) What is the sign of dw/dt for t while the stack of paper is burning?

(b) What behavior of dw/dt indicates that the fire is no longer burning?

(c) If the fire starts small but increases in vigor over a certain time interval, then does dw/dt increase or decrease over that interval? What about |dw/dt|?

Reference no: EM131602479

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