Physics, 01.11.2020 15:30 saraaaaa0404
Help with this please!
Suppose human colonists embark on a journey to the nearest star from our sun on a spaceship that travels at a speed of 0.04.
To the nearest integer, estimate how many generations will pass before the colonists arrive. The nearest star from our sun is Proxima Centauri, also known as Alpha Centauri C.
Answers: 3
Physics, 21.06.2019 19:30
The us government wants to allocate billions of dollars in the next 10 years to assure our future energy security. the funds will be spread among a variety of possible energy resources. where do you think the government should put the greatest support: solar energy, wind energy, clean coal, oil exploration, gas exploration, or a combination of sources? are there other efforts that should be explored? support your position with cited information for both questions.
Answers: 2
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 19:20
Aproduction line at v. j. sugumaran's machine shop has three stations. the first station can process a unit in 7 minutes. the second station has two identical machines, each of which can process a unit in 16 minutes (each unit only needs to be processed on one of the two machines). the third station can process a unit in 10 minutes. ▼ is the bottleneck station, with a bottleneck time of nothing minutes per unit (enter your response as a whole number).
Answers: 3
Help with this please!
Suppose human colonists embark on a journey to the nearest star from our su...
History, 06.01.2021 17:20
Mathematics, 06.01.2021 17:20
Mathematics, 06.01.2021 17:20
Mathematics, 06.01.2021 17:20
Computers and Technology, 06.01.2021 17:20
English, 06.01.2021 17:20
English, 06.01.2021 17:20
English, 06.01.2021 17:20
Mathematics, 06.01.2021 17:20
Mathematics, 06.01.2021 17:20
Business, 06.01.2021 17:20
History, 06.01.2021 17:20
Mathematics, 06.01.2021 17:20
Business, 06.01.2021 17:20
Mathematics, 06.01.2021 17:20