Physics, 19.11.2020 18:20 ayoismeisalex
They are 4 springs stretched by the same mass. Spring a stretches 25cm, spring B stretches 10cm, spring C stretches 100cm, and spring B stretches 1 cm, which spring has the largest spring constant
Answers: 2
Physics, 22.06.2019 05:00
Does work output exceed work input when a machine is used? a) yes, it does, as machines create energy. b) it depends on the type of machine used. c) no, it doesn’t, as machines are inefficient. d) no, it doesn’t, as machines cannot create energy.
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 09:00
Connie has $660,000 she wants to save. if the fdic insurance limit per depositor, per bank, is $250,000, which of these way is distributing her money between three banks will guarantee that all of her money is insured ?
Answers: 3
They are 4 springs stretched by the same mass. Spring a stretches 25cm, spring B stretches 10cm, spr...
Mathematics, 28.04.2021 19:40
Mathematics, 28.04.2021 19:40
Mathematics, 28.04.2021 19:40
Biology, 28.04.2021 19:40
Spanish, 28.04.2021 19:40
Mathematics, 28.04.2021 19:40
Mathematics, 28.04.2021 19:40
Mathematics, 28.04.2021 19:40