A 1. The force of gravity always of the planet. A 2 The pull is always toward the A 3. Galileo discovered that two objects of weight fell at the same speed. A 4. On the moon, the weight / color of objects makes a difference to the pull of gravity. A 5. The orbit of the earth is caused by the gravity of the A 6. Our weight comes from the of the world, our mass, and the force of gravity.

When two objects are far away, an observer moving will see a shift of the closest object relative to the farthest object. This shift is known as a.triangulation. b.parallax. c.a baseline. d.a degree. e.an arc second. What advantages do large telescopes have over smaller ones? a.larger collecting areas b.both superior angular resolution and less aberration c.superior angular resolution d.less aberration e.better exposure times What is the name given to a day which uses the stars as a reference? a.solar day b.diurnal day c.sidereal day d.orbital day e.none of the mentioned choices

Leave the moon's amplitude (semi-major axis) constant. How does the changing of the moon's orbital period change the calculated value of the planet's mass? a. Increasing the orbital period results in a higher calculated value for the mass of the planet. Decreasing the orbital period results in a lower calculated value for the mass of the planet. b. Increasing the orbital period results in a lower calculated value for the mass of the planet. Decreasing the orbital period results in a higher calculated value for the mass of the planet. c. Increasing the orbital period results in a higher calculates value for the mass of the planet. Decreasing the orbital period results in a higher calculated value for the mass of the planet.

2. The period of orbit of Venus is 225 days. Determine its frequency of orbit in Hertz

1.) In what way(s) is Einstein's general theory of relativity superior to Newton's theory of universal gravitation? For each way, give an example of a case where Einstein's theory provides a more accurate description of physical phenomena than does Newton's. (Select all that apply.)   A.) Newton's theory originally held that the orbit of a spherical object about another will be an open curve for which the point of closest approach slowly precesses. Einstein's theory correctly predicts that gravitational forces lead to orbits of closed ellipses.   B.) Einstein's theory correctly predicts the deflection of light passing near a massive object, while Newton's theory predicts a deflection that is one-half the observed deflection.   C.) Einstein's theory correctly predicts that the orbit of a spherical object about another will be an open curve for which the point of closest approach slowly precesses. Newton's theory originally held that gravitational forces lead to orbits of closed…

In a rotating 2 km diameter spacestation the outer edge experience 1g while halfway to the middle Select one: a. people experience 0.25g b. people experience 2g c. people experience 1g d. people experience 0.5g

5. Scales don't directly measure weight. Rather, they measure what we sometimes call apparent weight - the response of the scale (or the floor, or the ground etc.) to the force applied to it. How does apparent weight depend on angle? That is, suppose we say the angle is 0° when the scale is horizontal and 90° when the scale is vertical. How does apparent weight depend on angle?