power emitted = P = sigme*e*A*T^4
sigma = stefans constant = 5.67*10^-8w/m^2-K^4
e = 0.259
P = 14.9 W
A = 1.65 m^2
T^4 = P/sigma*e*A
T^4 = 14.9/(5.67*10^-8*0.259*1.65)
T = 157.47 K <------answer
Question 14 of 14 g feaming The robot HooRU is lost in space, floating around aimlessly,...
The robot HooRU is lost in space, floating around aimlessly, and radiates heat into the depths of the cosmos at the rate of 11.7 W. HooRU's surface area is 1.55 m2 and the emissivity of its surface is 0.297 Ignore the radiation HooRU absorbs from the cold universe. What is HooRU's temperature? Number
The robot HooRU is lost in space, floating around aimlessly, and radiates heat into the depths of the cosmos at the rate of 14.5 W. HooRU's surface area is 1.67 m^2 and the emissivity of its surface is 0.277. Ignore the radiation HooRU absorbs from the cold universe. What is HooRU's temperature?
Radiation of Energy The rate of heat transfer by emitted radiation is determined by the Stefan-Boltzmann law of radiation: = aeAT4 where o 5.67x10-8 J/s - m2 K is the Stefan-Boltzmann constant, A is the surface area of the object, and T is its absolute temperature in kelvin. The symbol e stands for the emissivity of the object, which is a measure of how well it radiates An ideal jet-black (or black body) radiator has e 1,whereas a perfect reflector has...
At our distance from the Sun, the intensity of solar radiation is 1370 W/m2. The temperature of the Earth is affected by the greenhouse effect of the atmosphere. This phenomenon describes the ef- fect of absorption of infrared light emitted by the surface so as to make the surface temperature of the Earth higher than if it were airless. For comparison, consider a spherical object of radius r with no atmosphere at the same distance from the Sun as the...
The rate of heat transfer by emitted radiation is determined by the Stefan-Boltzmann law of radiation = ceAT4 t where a 5.67x108 J/(s m2. K4) is the Stefan-Boltzmann constant, A is the surface area of the object, and T is its absolute temperature in kelvin. The symbol e stands for the emissivity of the object, which is a measure of how well it radiates. An ideal jet-black (or black body) radiator has e 1, whereas a perfect reflector has e...
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a) Draw a diagram of a solar hot water system and discuss the functions of its [5 marks For the solar collector, analyse the solar radiation heat gain and heat losses through different modes of heat transfer. How is the heat transfer rate to the water per unit area of the collector calculated? b)...
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Part A You have probably seen people jogging in extremely hot weather and wondered Why" As we shall see, there are good reasons nat to do thisl When jogging strenuously, an average runner of mass 69.0 kg ?nd surface aea 1 84 m2 produces energy at a How much heat per second is produced just by the act ot jogging? rate of up to 1310 W 800 % of which is converted to heat The jogger...
pe the earth at a rate of around 30 watts per cubic kilometer. (A watt is a rate of heat production.) The heat then flows to the earth's surface where it is lost to space. Let F(x,y, z) denote the rate of flow of heat measured in watts per square kilometer. By definition, the flux of F across a surface is the quantity of heat flowing through the surface per unit of time. (a) Suppose that the actual heat generation...
Homework 3 The figure below shows a very simple model of your skin on a very cold day in Wisconsin. The skin is composed of two lavers. The inner laver is the dermis which has a thickness of tha-3 mm and conductivity k- 0.32 W/m-K. The epidermis is the outer layer which has a thickness of thed0.12 mm and conductivity kod 0.14 W/m-K. The inner surface of the dermis is exposed to blood flow and therefore remains at Tiod34°C. The...