Amaterial with a cubic unit cell is heated from room temperature to 900°c without melting during this time, the bragg peaks in the x-ray diffraction pattern are seen to increase in width. the 20 position of the peak decreases over the same temperature range. explain these a) observations on an atomic scale. (note the mark allocation, there are 2 observations that need separate explanations)
Answers: 1
Physics, 21.06.2019 23:00
We want to calculate the total metabolic heat generated by a singing canary taking into account heat transfer by radiation, convection and exhaling air. the air temperature is 20 oc, canary’s body internal and surface temperature is 33oc, external body surface convective heat transfer coefficient is 25.2 w/m2 .k, temperature difference between the inhaled and exhaled air is 4.3 oc, the ventilation rate is 0.74 cc of air per second, specific heat of air is 1.0066 kj/kg.k and density of air is 1.16 kg/m3 . assume the canary’s body to be a cylinder with 7 cm diameter and 9 cm length, and heat exchange is from the side as well as the top and bottom of cylinder. calculate 1) the net rate of heat lost by radiation, assuming heat gained by the bird through radiation from the surroundings is 11.5 w; 2) rate of heat transferred by convection to the surrounding air; 3) rate of heat transferred in the exhaling air without considering any internal evaporation; 4) total metabolic power.
Answers: 2
Physics, 22.06.2019 00:00
Astate of matter all that has define volume and can flow is a(n)
Answers: 3
Physics, 22.06.2019 05:30
Blank liquids and gases exert a buoyant force on objects placed in them
Answers: 3
Physics, 22.06.2019 07:00
The cerebellum controls? thirst sensations sleep-wake cycles hand-eye coordination heart rate and pulse
Answers: 1
Amaterial with a cubic unit cell is heated from room temperature to 900°c without melting during thi...
Mathematics, 18.02.2021 17:00
History, 18.02.2021 17:00
History, 18.02.2021 17:00
Mathematics, 18.02.2021 17:00
Physics, 18.02.2021 17:00
English, 18.02.2021 17:00
History, 18.02.2021 17:00
Mathematics, 18.02.2021 17:00
Social Studies, 18.02.2021 17:00
Mathematics, 18.02.2021 17:00
Biology, 18.02.2021 17:00