Physics, 07.07.2019 10:00 patelandrew816
Which of the following is a chemical change? a. ice melting b. ice being carved c. water boiling d. water breaking down into hydrogen and oxygen
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
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 23:30
The power exerted by a muscle is the product of the force exerted and the velocity of contraction. the area of which of these shaded regions represents the power exerted while a weight is lifted at maximum speed?
Answers: 2
Physics, 23.06.2019 02:30
Anthropology is the study of the effects of disease on the body, while forensic anthropology studies the disease of crime a.) true b.) false
Answers: 2
Which of the following is a chemical change? a. ice melting b. ice being carved c. water boiling...
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