QUESTION 62 You could also use the Earth's orbital period around the Sun and its distance from the Sun to determine its density. O True False

What force holds the Earth in its place in the solar system? a. The gravitational pull caused by the moon within its orbit around the Earth b. The gravitational pull caused by the sun within the solar system  c. The gravitational pull caused by the black hole in the center of the Milky Way   d. The gravitational pull caused by Venus and Mars within the solar system

A number of gas giant planets orbiting other stars at distances less than 1 A.U. have been discovered. Because of their proximity to their parent stars, and their compositional similarity to Jupiter, they have been labeled “Hot Jupiters”.   The orbital radius of one of these planets is 0.06 A.U. with average orbital speed 600 km/sec. What is the length of this planet’s year in Earth (solar) days?  Estimate the mass, M, of its parent star in terms of the mass of the sun (M) using Newton’s first form of Kepler’s 3rd Law. Calculate the star’s luminosity, L, in terms of the luminosity of the sun (L☉), Note: (LL=MM4where L ~ 4 × 1026 W ).  The radius of this planet is 1.5 times the radius of Jupiter. Assuming its equilibrium temperature is the temperature at which the planet radiates as much energy as it receives from its star, estimate the temperature of the planet. The value of the planet’s albedo is 0.8. (NOTE: The intensity of the star’s radiant power at a distance d from the star is…

A distance R is measured to be 3.400±0.005m. What is the relative uncertainty in R?   b) What is the relative uncertainty in R3?    c) What is the relative uncertainty in R−2?    d) What is the absolute uncertainty in R−2?    e) What is the relative uncertainty in √R?