A carbon dioxide laser used in surgery emits infrared radiation with a wavelength of 10.6 µm. In 1.10 ms, this laser raised the temperature of 0.127 mm3 of flesh to 100°C and evaporated it. (Assume that the initial temperature of the flesh is 37.0°C, the heat of vaporization of water is 2,256 kJ/kg, the specific heat of flesh is the same as that of water, 4,186 J/(kg · °C), and the density of flesh is the same as that of water, 1,000 kg/m3.) How many photons were required? You may assume flesh has the same heat of vaporization as water. What was the minimum power output (in W) during the flash?
A carbon dioxide laser used in surgery emits infrared radiation with a wavelength of 10.6 µm. In 1.10 ms, this laser raised the temperature of 0.127 mm3 of flesh to 100°C and evaporated it. (Assume that the initial temperature of the flesh is 37.0°C, the heat of vaporization of water is 2,256 kJ/kg, the specific heat of flesh is the same as that of water, 4,186 J/(kg · °C), and the density of flesh is the same as that of water, 1,000 kg/m3.) How many photons were required? You may assume flesh has the same heat of vaporization as water. What was the minimum power output (in W) during the flash?
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Chapter1: Units, Trigonometry. And Vectors
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A carbon dioxide laser used in surgery emits infrared radiation with a wavelength of 10.6 µm. In 1.10 ms, this laser raised the temperature of 0.127 mm3 of flesh to 100°C and evaporated it. (Assume that the initial temperature of the flesh is 37.0°C, the heat of vaporization of water is 2,256 kJ/kg, the specific heat of flesh is the same as that of water, 4,186 J/(kg · °C), and the density of flesh is the same as that of water, 1,000 kg/m3.)
How many photons were required? You may assume flesh has the same heat of vaporization as water.
What was the minimum power output (in W) during the flash?
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