The two planets closest to Earth are Venus and Mars. Their distances to the Sun are on average:
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![The two planets closest to Earth are Venus and
Mars. Their distances to the Sun are on
average:
Sun to Venus: 1.08E8 km
Sun to Earth: 1.50E8 km
Sun to Mars: 2.28E8 km
mass of Sun: 1.99E30 kg
a) What are the orbital velocities of the 3
planets?
b) What change in energy is needed to travel
from Earth to Venus? c) What change in energy
is needed to travel from Earth to Mars?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F28e7be30-eca9-4147-a850-5833b744a665%2Fa42b2597-0c2e-4388-8f4e-b4b47fac9297%2F7doj8lv_processed.jpeg&w=3840&q=75)
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