For a planet orbiting the sun, rp is the distance from the sun to the perihelion and ra is the distance from the sun to the aphelion. What is a planet’s orbital eccentricity if rp is equal to 0.45ra ?(1 point) Responses 1.45 1.45 0.38 0.38 2.64 2.64 0.55
The eccentricity of a planet's orbit can be calculated using the equation:
eccentricity = (ra - rp) / (ra + rp)
Substituting the given value of rp = 0.45ra into the equation:
eccentricity = (ra - 0.45ra) / (ra + 0.45ra)
Simplifying the equation:
eccentricity = 0.55ra / 1.45ra
eccentricity = 0.55 / 1.45
eccentricity ≈ 0.3793
Therefore, the planet's orbital eccentricity is approximately 0.38.
Which statement describes the area swept out by a line between a planet and the sun at equal times as the planet moves along its orbit?(1 point) Responses It is proportional to the distance between the sun and the planet. It is proportional to the distance between the sun and the planet. It decreases as the planet moves closer to the sun. It decreases as the planet moves closer to the sun. It changes shape but always remains constant. It changes shape but always remains constant. It increases as the planet moves closer to the sun.
The statement "It is proportional to the distance between the sun and the planet" accurately describes the area swept out by a line between a planet and the sun at equal times as the planet moves along its orbit. This is known as Kepler's Second Law, which states that a line segment connecting a planet to the sun sweeps out equal areas in equal times, meaning that the area swept out is proportional to the distance between the sun and the planet. Therefore, the correct response is: It is proportional to the distance between the sun and the planet.
please chose one of the given answers
Apologies for the confusion. Based on the given responses, the correct answer is: "It is proportional to the distance between the sun and the planet."
Drag and drop the words into the correct locations. (2 points)
The Copernican model of the solar system was a
and the stars
model in which Earth
Planets
:: geocentric
:: travelled along a circular path
::were fixed to an outermost sphere
heliocentric
# was just another planet
:: floated in outer space
The Copernican model of the solar system was a:
heliocentric
:: floated in outer space
:: travelled along a circular path
:: was just another planet
geocentric
:: were fixed to an outermost sphere
can u make this into a sentence
Certainly! Here is the sentence:
"The Copernican model of the solar system was a heliocentric model in which planets travelled along a circular path, floated in outer space, and Earth was just another planet, while the geocentric model believed that the planets were fixed to an outermost sphere."