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At the top of a roller coaster 20 m above the ground the 5 kg car is moving at 2 m/s how fast is it moving at the bottoms of the hill
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In which of the following cases is work being done on an object? question 2 options: pushing against a locked door carrying a box down a corridor pulling a trailer up a hill suspending a heavy weight with a strong chain
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Who was the first scientist to measure speed as distance over time?
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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.
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Physics, 22.06.2019 14:20
The energy released by a nuclear fusion reaction is produced when
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At the top of a roller coaster 20 m above the ground the 5 kg car is moving at 2 m/s how fast is it...
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