Physics, 15.04.2020 16:12 isabelle1670
Identify the statement that is true about mass extinctions. A. Mass-extinction events are times in the Earth's history when few species evolve. B. The mass extinction of over two-thirds of the species on the Earth was the result of large volcanic eruptions in Hawaii. C. The mass extinction of dinosaurs occurred at the Permian-Triassic boundary. D. A mass extinction may happen when a comet or asteroid impact starts a chain of events that blocks sunlight for weeks or even years.
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Physics, 22.06.2019 03:50
A30 kg weight lies on top of a massless piston of area a = 0.01 m2 the exterior air is at a (constant) p =1 atm and t = 27 c. the interior gas is 0.4 moles of (ideal) n2 and it has initial temperature 27.00 degrees c. 1. what is the initial pressure in the interior? a. 29.4 kpa b. 130.7 kpa c. 101.3 kpa the next three questions concern what happens when an amount of heat q is slowly added to the interior, raising the piston by 1 mm and raising the interior temperature to 27.40 c
Answers: 3
Physics, 22.06.2019 17:40
You throw a baseball directly upward at time =0 at an initial speed of 14.9 m/s. what is the maximum height the ball reaches above where it leaves your hand? ignore air resistance and take =9.80 m/s2.
Answers: 1
Physics, 22.06.2019 21:00
The amount of work done is determined by 2 factors. describe an example of work (using the scientific definition) list the 2 factors that determine the amount of work done.
Answers: 2
Identify the statement that is true about mass extinctions. A. Mass-extinction events are times in t...
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