Physics, 09.03.2021 22:00 Jeyson5852
How much heat must be added to 5.0 g of solid lead at 30.°C to convert it to liquid lead at the melting point?
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Physics, 21.06.2019 22:00
There is a theory that indicates that dinosaurs became extinct when about 65 million years ago, a large asteroid hit the earth surface. dust caused by this collision blocked the sunlight reaching the earth's surface and many forms of life became extinct due to the cold. fearing this threat, how large the radius of an asteroid should you be looking for if the dangerous asteroid size is approximately the same as the one that killed the dinosaurs? available data suggests that about 18% of that asteroid's mass ended up as a dust spread evenly over earth after eventually settling out of the upper atmosphere. about 0.0180 g/cm^2 of dust, which is chemically different than the earth's rock, covered the earth's surface. typical asteroids have a density of about 1.9 g/cm^3. now that we know the size of the asteroid, how much energy was released during impact, assuming all of it was just the kinetic energy of the asteroid right before the impact?
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Physics, 22.06.2019 04:20
Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz. what wavelength is produced?
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Physics, 22.06.2019 04:30
In a system, when potential energy decreases, then entropy also decreases. true false
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Physics, 22.06.2019 16:20
Specific heat refers to the amount of heat required to change 1 gram of a substance by degree(s) celsius
Answers: 1
How much heat must be added to 5.0 g of solid lead at 30.°C to convert it to liquid lead at the melt...
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