Physics, 17.09.2019 02:30 NetherisIsTheQueen
The change in the internal energy of a system that releases 2,500 j of heat and that does 7,655 j of work on the surroundings is j.
Answers: 1
Physics, 21.06.2019 23:00, desiwill01
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 02:40, SMURFETTE86
15. one purpose of the tread pattern on a tire is to a reduce tire wear. b. reduce traction c. allow water to flow away from the tire. d. look impressive.
Answers: 1
Physics, 22.06.2019 12:30, mommer2019
Consider a system with two masses that are moving away from each other. why will the kinetic energy differ if the frame of reference is a stationary observer or one of the masses?
Answers: 1
The change in the internal energy of a system that releases 2,500 j of heat and that does 7,655 j of...
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