I need some help figuring this question out:
The sun has estimated mass of 2x10^36 and the sphere is of average radius of 6.96x10^5 km, calculate the average density of the sun in units of kg/km^3; kg/m^3; g/cm^3 and lbs./ml (hint: use answer from c to convert).

Solution Summary

This solution calculates the average density of the sun with step-by-step workings and explanations. All formulas used are included.

Haley's comet orbits thesun every 76 years, and was first observed in 240bce. Its orbit is highly elliptical, so that its closest approach to thesun (perihelion) is only 0.587 AU, while at its greatest distance (aphelion), the comet is 34.39 AU from thesun. (An AU, or astronomical unit, is the distance from earth to thesun,

Questions:
1. If thesun which is 93,000,000 miles away away from Earth was to go out, how long would it take for us to know that this had happened? Light travels at a speed of 3 x 10^8 meters/second.
2. What would thedensity be (in g/cm^3) of a block that is 4 cm by 15 cm by 12 cm, and has a mass of 4.3 kg?
3. An ob

1. A certain sedentary person uses energy at an average rate of 123.29Watts. All of this energy has its ultimate origin in thesun. How much matter is converted to energy in thesun per day to supply this person?
2. If 1 kcal = 4.18 kJoule. What is the rate of energy production in kilowatts from a college student producing 1

1. Earth's acceleration during eclipses.
What is the percentage change in the acceleration of Earth toward theSun when the alignment of Earth, Sun, and Moon changes from an eclipse of theSun (with the moon between Earth and Sun) to an eclipse of the Moon (Earth between Moon and Sun)?
Assume that Earth's orbital path arou

Halley's comet is in an elliptic orbit about thesun. The eccentricity of the orbit is 0.967 and the period is 76 years. The mass of thesun is 2 x 10^30 kg and G=6.67 x 10^-11 Nm^2/kg^2.
a) Using this data, determine the distance of Halley's Comet from thesun at perihelion and at aphelion.
b) What is the speed of Halle