Reference no: EM133254093

1. A lizard of mass 4.30 g is warming itself in the bright sunlight. It casts a shadow of 1.60 cm2 on a piece of paper held perpendicularly to the Sun's rays. The intensity of sunlight at the top of the Earth's atmosphere is 1.40 × 103 W/m2, but only half of this energy penetrates the atmosphere and is absorbed by the lizard. The lizard has a specific heat of 4.20 J/(g·°C). Assuming that there is no heat loss by the lizard (to simplify), how long must the lizard lie in the Sun in order to raise its temperature by 1.00°C?

2. A stainless steel saucepan, with a base that is made of 0.310-cm-thick steel (κ = 46.0 W/(m·K)) fused to a 0.150 cm thickness of copper (κ = 401 W/(m·K)), sits on a ceramic heating element at 108°C. The diameter of the pan is 18.0 cm, and it contains boiling water at 100.00°C. If the copper-clad bottom is touching the heat source, at what rate will the water evaporate from the pan? Latent heat of vaporization (Lv) for water is 2256 J/g. Enter your answer in three decimal points.