Modified Mastering Astronomy with Pearson eText -- Standalone Access Card -- for Astronomy Today (9th Edition)
9th Edition
ISBN: 9780134553955
Author: Eric Chaisson, Steve McMillan
Publisher: PEARSON
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Chapter 2, Problem 3P
To determine
The time taken by the spacecraft to travel from Earth to Venus if it has an orbit that just grazes Earth's orbit at aphelion and Venus's orbit at perihelion, assuming that Earth and Venus are in the right places at right time.
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For two moons (Moon A and Moon B) with the same mass, both in circular orbits about Mars, how many times more quickly or slowly is Moon B moving along its orbit if it is 9 times farther from Mars’ center than Moon A?
You throw a ball of mass 1 kilogram upward with a velocity of a = 25 m/s on Mars, where the force of gravity is g = -3.711 m/s2. Approximate how much longer the ball is in the air on Mars.
The answer must be one of the four
1. 2.245 seconds
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Many spacecraft have visited Mars over the years. Mars is smaller than Earth and has correspondingly weaker surface gravity. On Mars, the free-fall acceleration is only 3.8 m/s2. What is the orbital period of a spacecraft in a low orbit near the surface of Mars?
Chapter 2 Solutions
Modified Mastering Astronomy with Pearson eText -- Standalone Access Card -- for Astronomy Today (9th Edition)
Ch. 2 - Prob. 1DCh. 2 - Prob. 2DCh. 2 - Prob. 3DCh. 2 - Prob. 4DCh. 2 - Prob. 5DCh. 2 - Prob. 6DCh. 2 - Prob. 7DCh. 2 - Prob. 8DCh. 2 - Prob. 9DCh. 2 - Prob. 10D
Ch. 2 - Prob. 11DCh. 2 - Prob. 12DCh. 2 - Prob. 13DCh. 2 - Prob. 14DCh. 2 - Prob. 15DCh. 2 - Prob. 1MCCh. 2 - Prob. 2MCCh. 2 - Prob. 3MCCh. 2 - Prob. 4MCCh. 2 - Prob. 5MCCh. 2 - Prob. 6MCCh. 2 - Prob. 7MCCh. 2 - Prob. 8MCCh. 2 - Prob. 9MCCh. 2 - Prob. 10MCCh. 2 - Prob. 1PCh. 2 - Prob. 2PCh. 2 - Prob. 3PCh. 2 - Prob. 4PCh. 2 - Prob. 5PCh. 2 - Prob. 6PCh. 2 - Prob. 7PCh. 2 - Prob. 8P
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- If Martians want to launch a geostationary satellite (more accurately, "Aerostationary") to study their planet, what would be the altitude of the satellite? Data of Mars: Rotation period : 24.6 hours Mass : 6.4 x 10^23 kg Radius: 3390 kmarrow_forwardIf the gravitational field strength at the surface of Venus is g, at what distance from the surface of Venus will it be 0.25g? State your answer in terms of the radius of Venus.arrow_forwardThe launch window for a trip from Earth to Mars opens when Mars is in exact alignment with the Earth and Sun in its orbit behind the Earth in its orbit around the Sun ahead of the Earth in its orbit around the Sunarrow_forward
- Many spacecraft have visited Mars over the years. Mars is smaller than the earth and has correspondingly weaker surface gravity. On Mars, the free-fall acceleration is only 3.8 m/s2 What is the orbital period of a spacecraft in a low orbit near the surface of Mars? The radius of Mars is 3.4×10^6m..arrow_forwardYou can get from Earth to Mars by means of a Hohmann transfer orbit in 8 months. Based on what you know about Hohmann orbits, it should also be possible to make the same journey, also by Hohmann orbit, in 32 months 24 months 16 months 4 monthsarrow_forwardIf it takes a planet 3 years to sweep out 20% of its orbit, how long will it take the planet (in years) to complete one full orbit?arrow_forward
- A rocket is fired ‘vertically’ from the surface of mars with a speed of 2 km s-1. If 20% of its initial energy is lost due to martian atmospheric resistance, how far will the rocket go from the surface of mars before returning to it ? Mass of mars = 6.4×1023 kg; radius of mars = 3395 km; G = 6.67×10-11 N m2 kg-2.arrow_forwardAt their closest approach, Venus and earth are 4.20x 10^10m apart. The mass of Venus is 4.87x 10^24kg, the mass of earth is 5.97x 10^24 kg and G=6.67x10^-11N m^2/kg2. What is the magnitude of the gravitational force exerted by Venus on earth at that point?arrow_forwardThe Magellan orbiter orbits Venus with a period of 3.26 hours. How far (in km) above the surface of the planet is it? (The mass of Venus is 4.87 ✕ 1024 kg, and the radius of Venus is 6.05 ✕ 103 km.)arrow_forward
- The orbital speeds of the planets Mercury and Mars are v(Mercury) = 50 km / s and V(Mars) = 24.2 km / s. Assume that the orbits of these planets Mercury and Mars around the Sun are circular, find the ratio of the radii of their R (Mercury) / R (Mars) orbits.arrow_forwardAt its nearest approach, Venus comes within about 40 million km of Earth and the semi-major axis of the ellipse which is Venus' orbit is 1.08 × 108 km. *How distant is Venus at its farthest in km?arrow_forwardMercury takes 88 days to complete an orbit around the Sun; Venus takes 225 to complete an orbit around the Sun. Which of the following might be the period of a Hohmann transfer orbit that takes you from Mercury to Venus? 88 days 450 days 44 days 140 days 225 daysarrow_forward
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