Physics, 21.09.2020 18:01 manyah6189
The operating temperature of a tungsten filament in an incandescent light bulb is 2450 K, and its emissivity is 0.350. Find the surface area of the filament of a 150 W bulb if all the electrical energy consumed by the bulb is radiated by the filament as electromagnetic waves. (Only a fraction of the radiation ap- pears as visible light.)
Answers: 2
Physics, 22.06.2019 14:30
Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2
Answers: 1
Physics, 22.06.2019 19:30
Because atoms of elements in the same group of thbecause atoms of elements in the same group of the periodic table have the same number of neutrons, they have similar properties. select the best answer from the choices provided t fe periodic table have the same number of neutrons, they have similar properties. select the best answer from the choices provided t f
Answers: 1
Physics, 23.06.2019 00:30
Madison lives near the ocean. she’s formed a hypothesis that increased concentrations of salt in the air speeds the corrosion of certain metals. if madison plans to test this hypothesis, she will have to deal with the following variables in her experiment: dependent variable: independent variable: one possible confounding variable:
Answers: 1
The operating temperature of a tungsten filament in an incandescent light bulb is 2450 K, and its em...
English, 09.12.2021 05:50
Mathematics, 09.12.2021 05:50
Physics, 09.12.2021 05:50
Mathematics, 09.12.2021 05:50
Mathematics, 09.12.2021 05:50
Mathematics, 09.12.2021 05:50
Mathematics, 09.12.2021 05:50
Mathematics, 09.12.2021 05:50