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). What is the rate of increase of the lizard’s temperature? 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 2.80°C?

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Q: A person of surface area 1.80 m2 is lying  in the sunlight to get a tan. If the intensity of the…

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Q: width of 9.0m and a length of 12.0m. The depth of the water is 1.83m. One morning the temperature…

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Q: A person is standing outdoors in the shade where the temperature is 21 °C. (a) What is the radiant…

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Q: 1.5 kg of water (c = 4189 J/(kg⋅K)) is heated from T1 = 11° C to T2 = 20.5° C. IF 0.5 kg of water…

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Calorimetry

Measuring the heat transferred during chemical reactions or other physical processes is known as calorimetry. It comes under the branch of thermochemistry.