21st Century Astronomy
6th Edition
ISBN: 9780393428063
Author: Kay
Publisher: NORTON
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Chapter 3, Problem 15QP
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Chapter 3 Solutions
21st Century Astronomy
Ch. 3.1 - Prob. 3.1ACYUCh. 3.1 - Prob. 3.1BCYUCh. 3.2 - Prob. 3.2CYUCh. 3.3 - Prob. 3.3CYUCh. 3.4 - Prob. 3.4CYUCh. 3 - Prob. 1QPCh. 3 - Prob. 2QPCh. 3 - Prob. 3QPCh. 3 - Prob. 4QPCh. 3 - Prob. 5QP
Ch. 3 - Prob. 6QPCh. 3 - Prob. 7QPCh. 3 - Prob. 8QPCh. 3 - Prob. 9QPCh. 3 - Prob. 10QPCh. 3 - Prob. 11QPCh. 3 - Prob. 12QPCh. 3 - Prob. 13QPCh. 3 - Prob. 14QPCh. 3 - Prob. 15QPCh. 3 - Prob. 16QPCh. 3 - Prob. 17QPCh. 3 - Prob. 18QPCh. 3 - Prob. 19QPCh. 3 - Prob. 20QPCh. 3 - Prob. 21QPCh. 3 - Prob. 22QPCh. 3 - Prob. 23QPCh. 3 - Prob. 24QPCh. 3 - Prob. 25QPCh. 3 - Prob. 26QPCh. 3 - Prob. 27QPCh. 3 - Prob. 28QPCh. 3 - Prob. 29QPCh. 3 - Prob. 30QPCh. 3 - Prob. 31QPCh. 3 - Prob. 32QPCh. 3 - Prob. 33QPCh. 3 - Prob. 34QPCh. 3 - Prob. 35QPCh. 3 - Prob. 36QPCh. 3 - Prob. 37QPCh. 3 - Prob. 38QPCh. 3 - Prob. 39QPCh. 3 - Prob. 40QPCh. 3 - Prob. 41QPCh. 3 - Prob. 42QPCh. 3 - Prob. 43QPCh. 3 - Prob. 44QPCh. 3 - Prob. 45QP
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- What evidence can you cite that planets orbit other stars?arrow_forwardIf you lived on Mars, which planets would describe retrograde loops? Which would never be visible as crescent phases?arrow_forwardA comet has a period of 76.3 years and moves in an elliptical orbit in which its perihelion (Closest approach to the Sun) is 0.610 AU. Find (a) the semimajor axis of the comet and (b) an estimate of the comets maximum distance from the Sun, both in astronomical units.arrow_forward
- According to the solar nebula theory, why is the Earth’s orbit nearly in the plane of the Sun’s equator?arrow_forwardThe planet Mercury has a radius of about 0.38 Earth radii and a mass of only 0.055 Earth masses. Estimate g on Mercury. __________________ m/s2arrow_forwardWhich phrase or phrases about Kepler's laws of planetary motion are true? - the moon is perfectly round (?) - planets orbit the sun in elipses (True) - planets do not move uniformly.... they speed up the closer they get to the sun. (?) - earthquakes never happen in Kansas. (False)arrow_forward
- 1) The average distance from the moon to the earth is 385,200 km. Convert this distance to miles by multiplying by 0.6 miles/km. This is the radius of the moon’s orbit.arrow_forwardTwo moons orbits a planet. Describe the orientation of the moons in their orbits that will result in the smallest tides on the surface of the planet. Explain.arrow_forwardDoes the Kepler's Third Law of planetary motion applies to Pluto? Explainarrow_forward
- Scientists determine the masses of planets by observing the effect of the gravitational field of those planets on nearby objects - mainly upon their moons. By measuring the orbital period and orbital radius of a moon about a planet, Newton's laws of motion can be used to determine the mass of the planet. Phobos, a moon of the planet Mars, was discovered in 1877. It's orbital radius is 9380 km and its orbital period is 0.319 days (2.77 x 104 seconds). Determine the mass of Mars based on this data.arrow_forward16. What is the orbital period of Deimos? Recall Kepler's 3rd law: (Ta/Tb)^2 = (Da/Db) ^3 where Ta & Tb are the periods of orbiting bodies, and Da & Db are the respective distance of the orbiting bodies.arrow_forwardThe planet Saturn orbits the Sun at an average distance of 888 million miles. Use Kepler’s 3rd law to find the period of Saturn’s orbit, in Earth years.arrow_forward
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