8 In An object having emissivity 0.0867 radiates heat at 20 W, and temperature isT. IfT is doubled, what is the rate at which it radiates heat?a) 16 Wb) 64 Wc) 240 Wd) 320 W9. Which one of the following properties of a gas is NOT consistent with thekinetic theory of gasses?a) The average speed of the gas molecules is smaller at higher.b) Gas molecules are widely separated. temperaturesc) Gases fill whatever space is available to them.d) Gas molecules move rapidly in a random fashion10. How much heat is radiated per second by a person of body temperature 100 °C.body area 2.8 m², and emissivity 0.25?a) 1000 J/sb) 255J/sc) 556 J/sd) 768 J's

(8).It is given that, The fixed emissivity of the object is .…

Answered: 8 In An object having emissivity 0.0867…

Similar questions

4. Two kilograms of water at 120°C with a quality of 25% has its temperature raised 20°C in a constant-volume process as in the figure. What is the heat transfer and work in the process? MH_v1
A certain mass, m, of water has thermal energy added to it until the water is at the boiling point. Additional thermal energy is added until the entire mass, m, has been phased changed into steam. a) The temperature of the steam will be less than that of the water at the boiling point. b) The temperature of the steam will be greater than that of the water at the boiling point. c) The temperature of the steam will be the same as that of the water at the boiling point. d) The temperature of the steam will be zero. e) The temperature of the steam will be 2256000K.
G67
A 60.0-kg runner expends 359 W of power while running a marathon. Assuming 12.5% of the energy is delivered to the muscle tissue and that the excess energy is removed from the body by sweating, determine the volume of bodily fluid (assume it is water) lost per hour. (At 37.0°C the latent heat of vaporization of water is 2.41 ✕ 106 J/kg.) cm3
H78
The heat conducted through a bar depends on which of the following? A. The coefficient of linear expansionB. The thermal conductivityC. The specific heat capacityD. The length of the barE. The cross-sectional area of the bar A, C, and D A, B, and D B, C, D, and E B, D, and E C, D, and E
0.4 kg water is at room temperature 23 degrees in an aluminum container. An unknown metal with 0.5 kg mass is placed inside the water raising its temperature to 40 degrees. A)What is the specific heat of the unknown metal. B) Would the equilibrium temperature greater, less or the same if the system was not properly isolated.
3. 120 grams of water are heated from zero degrees Celsius to 30.0 degrees Celsius. Which expression should be used to determine the amount of calories added to the water to do this? The latent heat of fusion of ice is 79.7 cal/gram, and the specific heat of water is 1 cal/gramCo. a. 120 b. 120 x 1 x 30 c. 120 x 79.7 d. 30 divided by 120 e. 120 divided by 30

8 In An object having emissivity 0.0867 radiates heat at 20 W, and temperature is T. IT is doubled, what is the rate at which it radiates heat? a) 16 W b) 64 W c) 240 W d) 320 W