Physics, 08.04.2021 02:10 paolaviviana
Meteorites are rocks that enter Earth’s atmosphere and only partially burn up
during entry, so that the remaining mass lands on Earth’s surface. The speeds
with which meteorites strike Earth’s surface depend on their point of origin. If
they were originally small rocks that orbited Earth, their impact speed might
be as low as 10.0 km/s. If the small rocks orbited the sun, the speed with
which they collide with Earth could be as large as 70.0 km/s. Suppose a
meteorite collides with Earth with a force of –6.41 × 1012 N.
a. What is the mass of the meteorite if its impact speed is 10 km/s, so that it
has an acceleration of approximately –1.00 × 108
m/s^2?
b. What is the mass of the meteorite if its impact speed is 70 km/s, so that it
has an acceleration of approximately –490 × 109
m/s^2?
Answers: 3
Physics, 21.06.2019 21:00, kaykaystark5528
Iron reacts with sulfur to form iron sulfide. if 60 grams of iron reacts with sulfur to produce 90 grams of iron sulfide, how much sulfur has been used in the chemical reaction?
Answers: 3
Physics, 22.06.2019 10:00, lorelei7668
(a) calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) imagine adding electrons to the pin until the negative charge has the very large value 1.00 mc. how many electrons are added for every 109 electrons already present
Answers: 3
Meteorites are rocks that enter Earth’s atmosphere and only partially burn up
during entry, so that...
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