EXPLORATIONS:INTRO.TO ASTRONOMY
9th Edition
ISBN: 9781260150513
Author: ARNY
Publisher: RENT MCG
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Chapter 12, Problem 7P
To determine
The density of Sun in grams per cubic centimetre, and comparison with the density of Jupiter.
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If the radius of the sun is 7.001×105 km, what is the average density of the sun in units of grams per cubic centimeter?
The volume of a sphere is (4/3)π r3.
The sun is a sphere with an estimated mass of 2.00×1030 kg.
What exactly is the conversion process for this?
What causes the Sun's magnetic fields get wound up as the solar cycle intensifies?
Convection in the outer part of the sun twists the fields.
Solar prominences carrying hot plasma above the Sun's surface.
The solar wind carries charged particles away from the sun compressing the field.
The Equator of the Sun rotates faster than the poles.
Using the concept of hydrostatic equilibrium, explain why the Sun does not collapse under the weight of its own gravity.
Chapter 12 Solutions
EXPLORATIONS:INTRO.TO ASTRONOMY
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- From Doppler shifts of the spectral lines in the light coming from the east and west edges of the Sun, astronomers find that the radial velocities of the two edges differ by about 4 km/s, meaning that the Sun’s rotation rate is 2 km/s. Find the approximate period of rotation of the Sun in days. The circumference of a sphere is given by 2pR, where R is the radius of the sphere.arrow_forwardThe radius of the Sun is 0.7 million km. What percentage of the radius is taken up by the chromosphere? (Hint: Refer to Figure 8-1.)arrow_forwardWhy do sunspots look dark?arrow_forward
- Assume that the core of the Sun has one-eighth of the Sun’s mass and is compressed within a sphere whose radius is one-fourth of the solar radius.Assume further that the composition of the core is 35% hydrogen by mass and that essentially all the Sun’s energy is generated there. If the Sun continues to burn hydrogen at the current rate of 6.2 *1011 kg/s, how long will it be before the hydrogen is entirely consumed? The Sun’s mass is 2.0 * 1030 kg.arrow_forwardCalculate the Sun's average density using this formula: V = 4 /3 π r 3 where V = volume (m3) and r = radius (m) ρ = m /V where ρ = density (kg/m3), m = mass (kg), and V = volume (m3arrow_forwardThe radius of the Sun is 7x10⁸ m and its mass is 2x10³⁰kg.What is the density of the Sun (density = mass/volume)? The density of water is 1000 kg/m³. What is the ratio of the Sun's density to that of water?arrow_forward
- Why do the magnetic fields lines of the sun get warped? a. effects of the solar wind b. surface of the sun is cooler near the poles c. uneven fusion rates in the core d. equator rotates more rapidly than the polesarrow_forwardDuring the Maunder minimum a. solar brightness dropped slightly b. the average surface temperature of the sun dropped c. few sunspots were observedarrow_forwardSunspots appear dark because they are A) hotter than the rest of the Sun's surface. B) more magnetic than the rest of the Sun's surface. C) cooler than the rest of the Sun's surface. D) None of the abovearrow_forward
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