A hot body obeys Newton's law of cooling. Which temperature-versus-time graph represents its cooling? (Graph options are described in words.)

Question

A hot body obeys Newton's law of cooling. Which temperature-versus-time graph represents its cooling? (Graph options are described in words.) — Exam MCQ

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D. Temperature decreases rapidly at first and then gradually levels off; a concave-up curve — For constant surroundings, T - Ts = (T0 - Ts)e^(-kt). The cooling rate decreases as the temperature approaches the surroundings, giving the curve described in D.

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A. A sideways curved line with two temperatures for some times

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B. Temperature decreases increasingly steeply; a concave-down curve

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C. Temperature decreases along a straight line

A hot body obeys Newton's law of cooling. Which temperature-versus-time graph represents its cooling? (Graph options are described in words.)

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