Imagine sunlight falling on three square areas. One is an inert black material. The second is a photovoltaic cell surface, which converts radiant energy into electricity. The third is an area on a green tree leaf. Draw diagrams that show the energy conversions in each case, using Figure 5.9 as a model. How these three examples are related to the idea of sustainable energy sources?

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50 g H2o0) 100 °C 50 g H2o0) 25°C 50 g H.OOInitially hot water) I Ice warms up to water at 25 °C; once this temperature is reached, system has internal energy E water H20(s) 0 °C cools to water at 25 °C; once this temperature is reached, system has internal energy E