EBK PHYSICS FOR SCIENTISTS AND ENGINEER
6th Edition
ISBN: 9781319321710
Author: Mosca
Publisher: VST
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Chapter 11, Problem 29P
(a)
To determine
To prove:
(b)
To determine
To find: The distance between the sun and the Venus.
(c)
To determine
To Find: The length of the Venusian year.
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A saturn year is 29.5 times the ear
th year. How far is the saturn fro
m the sun if the earth is 1.50 ×
10km away from the sun?
(a) A reasonably accurate value for the AU is 1.50 × 101 m. If the year is a × 107 s,
(2)
(a good approximation, and one easy to remember) calculate Earth's speed in km/s assuming a
circular orbit about the Sun. (b) The experimental determination (first attempted by Cavendish in
1797/98) yields G = 6.67×10-11 N-m²/kg?. Calculate the mass of the Sun. (c) On the other hand,
when we measure distances in AU and speeds in km/s, the constant in the Vis-Viva Equation is
GM = 900. Explain why this is the case. (d) Once we know the distance to the Sun, using its
angular size one could determine that the radius of the Sun is approximately Rsun = 7 × 10* m.
Calculate the ratio of the Sun's density to that of water.
(a) Calculate Venus' mass given the acceleration due to gravity at the north pole is 8.865 m/s? and the radius of Venus at the pole is 6,052 km.
M.
calculated
| kg
(b) Compare this with the accepted value of 4.868 x 1024 kg.
calculated
M
аcсepted
Chapter 11 Solutions
EBK PHYSICS FOR SCIENTISTS AND ENGINEER
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- Kepler’s third law says that the orbital period (in years) is proportional to the square root of the cube of the mean distance (in AU) from the Sun (Pa1.5) . For mean distances from 0.1 to 32 AU, calculate and plot a curve showing the expected Keplerian period. For each planet in our solar system, look up the mean distance from the Sun in AU and the orbital period in years and overplot these data on the theoretical Keplerian curve.arrow_forwardComet Halley (Fig. P11.21) approaches the Sun to within 0.570 AU, and its orbital period is 75.6 yr. (AU is the symbol for astronomical unit, where 1 AU = 1.50 1011 m is the mean EarthSun distance.) How far from the Sun will Halleys comet travel before it starts its return journey?arrow_forward(a) Calculate the orbital inclination required to place a Venus-orbiting spacecraft in a 400 km-by-900 km sun-synchronous orbit. (b) Determine the periapsis and apoapsis for a Mars-orbiting spacecraft whose orbit satisfies all the following conditions: it is sun-synchronous, its argument of perigee is constant, and its period is 7 h.arrow_forward
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