Physics, 13.05.2021 20:40 jhanes1983
what is the electric potential difference across an electrical load that has a resistance of 4 ohms and a current of 3a flowing through it?
Answers: 2
Physics, 21.06.2019 23:30
A175 g lump of molten lead at its melting point (327 c) is placed into 55.0 g of water at 20.0 c. the specific heat of lead is 130.j/kg c and the hf of lead is 20,400 j/kg. when the lead and the water have reached equilibrium, what is the temperature of the mixture?
Answers: 3
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 12:40
Estimate the schwarzschild radius (in kilometers) for a mini-black hole formed when a superadvanced civilization decides to punish you (unfairly) by squeezing you until you become so small that you disappear inside your own event horizon. (assume that the your weight is 50 kg)
Answers: 1
what is the electric potential difference across an electrical load that has a resistance of 4 ohms...
English, 09.01.2021 19:50
Mathematics, 09.01.2021 19:50
English, 09.01.2021 19:50
History, 09.01.2021 19:50
Mathematics, 09.01.2021 19:50
Computers and Technology, 09.01.2021 19:50
World Languages, 09.01.2021 19:50
World Languages, 09.01.2021 19:50
Biology, 09.01.2021 19:50
Mathematics, 09.01.2021 20:00
English, 09.01.2021 20:00