Physics, 05.03.2021 19:50 shimmerandshine1
Earth's interior at a depth of 3500 kilometers is believed to be
1 - liquid at a temperature of approximately 4900
2 - solid at a temperature of approximately 4900
3 - liquid at a temperature of approximately 5400
4 - solid at a temperature of approximately 5400
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 14:20
Antireflective coatings on solar cells are often made by applying a thin film of silicon nitride (sinx), which has an index of refractive of 1.2, on the top of the silicon solar cell, which has a refractive index of about 3.5. however, the sun emits radiation of various wavelengths which the solar cell absorbs, and the antireflective coating can only absolutely minimize the reflection of one of these wavelengths. the coating thickness is chosen to reduce the reflection of green/yellow light (e = 2.2 ev), which is the most intense color in the solar spectrum (shown below). which of the following coatings would minimize reflection of green/yellow light? the answer is 820 nm how? what is the angular width of the central maximum of an electron traveling at 2 x 108 m/s going through a single slit of width 1 mm.
Answers: 1
Physics, 22.06.2019 18:00
The photo shows sugar dissolved into a solution with excess sugar at the bottom of the jar this type of solution is classified as a. unsaturated b. compound c. saturated d. plasma
Answers: 1
Physics, 22.06.2019 19:30
Emagnitude of the electrical force acting between a +2.4 Γ 10β8 c charge and a +1.8 Γ 10β6 c charge that are separated by 0.008 m is n, rounded to the tenths place.
Answers: 3
Earth's interior at a depth of 3500 kilometers is believed to be
1 - liquid at a temperature of app...
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