In your own words differentiate Comets Asteroids Meteors Meteoroids and Meteorites
1 answer:
Thanks for the question,
Asteroids: These are rocky and airless plates from the formation of planets in our solar system. It basically revolves around our sun in the space barrier between Mars and Jupiter and moves in the size of cars to smaller planets.
Comets: comets are the most polluted glaciers of ice and dust created at the time of the birth of the solar system 4.6 billion years ago. Many comets have a fixed orbit around the outer surface of the solar system beyond the planet Neptune.
Meteoroids, Meteorites, Meteorites: Meteoroids are small asteroids or broken comet fragments and sometimes planets. They vary in size from sand dune to three large stones in diameter. When meteoroids collide with the earth's atmosphere, they form meteors. When those meteors survive space and reach the surface of the planet, their remains are called meteorites.
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Answer:
a) M = 4,997 10²⁰ kg , b) T = 1.43 10³ s
Explanation:
a) This exercise should be solved in several parts, let's start by calculating the acceleration of gravity of this planet from kinematics
v = v₀ - a t
As it indicates that there is no atmosphere, the friction force is zero and the initial and final velocity have the same module, but the opposite direction
a = (v₀ - v) / t
a = (15 - (-15)) /9.00 = 30/9
a = 3.33 m / s²
Now we use Newton's second law where force is the force of universal attraction
F = m a
G m M / r² = m a
M = a r² / G
Let's calculate
M = 3.33 (1.00 10⁵)² / 6.67 10⁻¹¹
M = 4,997 10²⁰ kg
b) The period of the ship's orbit
In this case we have a centripetal acceleration
The radius of the orbit is the radius of the plant plus the height of the ship from the surface
R = + h
R = 1 10⁵ + 2.00 10⁴
R = 12 10⁴ m
F = m a
G m M / R² = m a
Centripetal acceleration is
a = v² / R
The orbit is circular therefore the velocity module is constant, so we can use the equation of uniform motion, where the distance is the length of the orbit, for a circle
d = 2π R
v = d / t
v = 2π R / T
Let's replace
G m M / R² = m (2π R / T)² / R
G M = R³ 4π² / T²
T² = 4π² R³ / G M
T² = (4π² (12 10⁴)³ / (6.67 10⁻¹¹ 4,997 10²⁰)
T² = 6.82 10¹⁶ / 3.33 10¹⁰
T = √ (2,048 10⁶)
T = 1.43 10³ s