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
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Newton's law of cooling states that the rate of change in the temperature t(t) of a body is proportional to the difference between the temperature of the medium m(t) and the temperature of the body. that is, startfraction dt over dt endfraction equals upper k left bracket upper m left parenthesis t right parenthesis minus upper t left parenthesis t right parenthesis right bracket , where k is a constant. let kequals0.04 left parenthesis min right parenthesis superscript negative 1 and the temperature of the medium be constant, m(t) font size decreased by 3 equivalent font size decreased by 3 294 kelvins. if the body is initially at 369 kelvins, use euler's method with hequals0.1 min to approximate the temperature of the body after (a) 30 minutes and (b) 60 minutes.
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Meteorites are rocks that enter Earth’s atmosphere and only partially burn up
during entry, so that...
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