Explanation Write the expression for the time interval to boil the water, Δ t = T E R P (I) Here, P is the solar power, Δ t is the time interval to boil the water and T E R is the energy required to boil the water. Write the expression for the energy transfer required, T E R = m c Δ T (II) Here, m is the mass of the water, c is the specific heat capacity of the water and Δ T is the temperature change. Write the expression for the solar power, P = f I A = f I ( π d 2 4 ) = 1 4 π d 2 f I (III) Here, f is the fraction of incident reaches the surface, d is the diameter of the cooker and I is the intensity of the solar. Substitute (III) and (II) in (I), Δ t = m c Δ T ( 1 4 π d 2 f I ) = 4 m c Δ T π d 2 f I (IV) Conclusion: Substitute 80

Principles of Physics: A Calculus-Based Text

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ISBN: 9781133104261

Author: Raymond A. Serway, John W. Jewett

Publisher: Cengage Learning

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Principles of Physics: A Calculus-Based Text

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Thetime interval to boil the water.

Solution Summary: The author writes the expression for the time interval to boil the water, Delta t=T_ERP, and the energy transfer required.

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