What is the percentage change in the acceleration of Earth toward the Sun when the alignment of Earth, Sun, and Moon changes from an eclipse of the Sun (with the moon between Earth and Sun) to an eclipse of the Moon (Earth between Moon and Sun)?

Assume that Earth's orbital path around the Sun is a perfect circle and that the Moon's orbital path around Earth is also a perfect circle, in the same plane. Also assume that the Moon orbits around Earth's center of mass and Earth orbits around the Sun's center of mass. (Although none of these assumptions are actually true, they are not far off.)

2. Twin Sun system.

In a hypothetical binary star system, each star has the same mass as our Sun, and they revolve about their center of mass. Their orbit is perfectly circular, so that the distance between them is always exactly twice the distance between Earth and our Sun. What is the period of the stars' rotation?

Calculate the centripetal acceleration of the Earth in its orbit around the Sun and the net force exerted on the Earth. What exerts this force on the Earth? Assume the Earth's orbit is a circle of radius 1.50 x 10^11m.

The radius of the earth's very nearly circular orbit around the sun is 1.5 x 1011 m. Find the magnitude of the earth's a.) velocity b.) angular veloctiy and c.) centripetal acceleration as it travels around the sun. Assume a year of 365 days.

a) Calculate the mass of the sun from the radius of the earth's orbit (1.5 x 10^11 m)., the earth's period in its orbit, and the Universal Gravitational Constant, G.
b) What is the density of the sun and how does it compare with the density of the earth? (The sun's radius is 6.96 x 10^ 8 m).

Consider the Earth-Sunsystem as a giant-sized hydrogen atom, the objects interacting, however, by the gravitational force. (a) What is the quantum number, according to Bohr Theory, for the Earth's orbit about the Sun? (b) If the Earth were to make a transition to the next lowest quantum state, by what amount would its distance

On his 30th birthday, a twin gets on a spaceship travelling at 4/5c which takes him to a distance star system. When he arrives he immediately turns around and comes home at the same speed. His twin sister stays behind on the Earth. Then first twin arrives home on his 48th birthday (by his own watch).
a) How old is his twin si

The solar wind is a continuous stream of particles, mostly protons and electrons, moving away from the Sun. When the particles encounter Earth's upper atmosphere, they are moving at speeds of several hundred km/s. If such a particle reaches Earth's upper atmosphere with a speed of 92 km/s, how fast was it moving when it cross

1. Explain what causes a lunar eclipse. Explain what causes a solar eclipse. Include a diagram. Why don't eclipses occur every month?
2. Describe the phase changes of the Earth that one would see if viewed from the Moon.
3. It is said that Newton unified Earth and the Universe. Explain.

What arc length does the Earth travel in a three-month period in its nearly circular orbit around the Sun? (The radius of the Earth's orbit is 1.5 x 10^11 m.)
Please provide a detailed explanation.