Answers: 3
Physics, 21.06.2019 15:00
Air flows upward in the wick of a lantern because of the liquid property called
Answers: 1
Physics, 22.06.2019 06:20
Clothing made of several thin layers of fabric with trapped air in between, often called ski clothing, is commonly used in cold climates because it is light, fashionable, and a very effective thermal insulator. so it is no surprise that such clothing has largely replaced thickand heavy old-fashioned coats. (a) consider a jacket made of five layers of 0.1-mm-thick synthetic fabric (k = 0.13 w/m·°c) with 1.5-mm-thick air space (k = 0.026 w/m·°c) between the layers. assuming the inner surface temperature of the jacket to be 28°c and the surface area to be 1.25 m2, determine the rate of heat loss through the jacket when the temperature of the outdoors is 0°c and the heat transfer coefficient at the outer surface is 25 w/m2·°c. (b) what would your response be if the jacket is made of a single layer of 0.5-mm-thick synthetic fabric? what should be the thickness of a wool fabric (k = 0.035 w/m·°c) if the person is to achieve the same level of thermal comfort wearing a thick wool coat instead of a five-layer ski jacket?
Answers: 1
Physics, 22.06.2019 11:30
Which of the following is the phase that results when the moon is on the opposite side of the earth from the sun? a. quarter moon b. crescent moon c. new moon d. full moon
Answers: 1
Physics, 22.06.2019 21:00
What is the efficiency of an engine that does 80 j of work and exhausts 320 j of heat while taking in 400 j of heat ? a. 10% b. 20% c. 80% d. 25%
Answers: 1
assess a student set up a line of dominoes so that each is standing vertically next to another. he t...
Biology, 12.10.2019 00:30
Physics, 12.10.2019 00:30
Chemistry, 12.10.2019 00:30
Mathematics, 12.10.2019 00:30
Mathematics, 12.10.2019 00:30
History, 12.10.2019 00:30
Biology, 12.10.2019 00:30
History, 12.10.2019 00:30
Mathematics, 12.10.2019 00:30
English, 12.10.2019 00:30
Social Studies, 12.10.2019 00:30
Biology, 12.10.2019 00:30