Is the atmosphere of a planet orbiting a hot F star likely to
absorb or reflect...
Is the atmosphere of a planet orbiting a hot F star likely to
absorb or reflect more incoming radiation from its star than an M
star? Why? What about the surface (assuming some part of both
planets contains ice cover)? Why?
4) A planet is orbiting a star at a distance of 1.20 × 1011 m
with a period of 0.750 Earth years. What is the acceleration of the
planet?
5) A fan is rotating at a constant 360.0 rev/min. What is the
magnitude of the acceleration of a point on one of its blades 10.0
cm from the axis of rotation?
6) A particle travels in a circular orbit of radius 10.0 m. Its
speed is changing at a rate...
What is the gravitational lensing signature of a planet
orbiting a star? Draw a picture of the spatial relationship between
the star being lensed, the planet, and the star around which the
planet is orbiting. Also, draw a typical light curve showing how
the planet manifests itself.
A day on a distant planet observed orbiting a nearby star is 52.1
hours. Also, a year on the planet lasts 38.7 Earth days.* Calculate
the average angular speed of the planet about its own axis of
rotation in radians per second, with the second as measured on
Earth.
Calculate the average angular speed of the planet as it travels
around its neighboring star, with the second as measured on Earth.
A spaceship travels at a constant speed from earth to a planet
orbiting another star. When the spacecraft arrives, 11 years have
elapsed on earth, and 9.7 years have elapsed on board the ship. How
far away (in meters) is the planet, according to observers on
earth?
A spaceship travels at a constant speed from earth to a planet
orbiting another star. When the spacecraft arrives, 13 years have
elapsed on earth, and 8.6 years have elapsed on board the ship. How
far away is the planet, according to observers on earth?
A spaceship travels at a constant speed from earth to a planet
orbiting another star. When the spacecraft arrives, 14 years have
elapsed on earth, and 9.7 years have elapsed on board the ship. How
far away is the planet, according to observers on earth?
Problem 1. A particle is orbiting a star of mass M in a circular
orbit. (a, 2 POINTS) Find the equation that provides the orbital
speed at a given distance r from the center of the star. (b, 1
POINT) From the result at (a), calculate at what distance rS the
particle should be from the center of the star for its orbital
speed to be equal to the speed of light, c (in this case, the
particle would be...
Which terrestrial planet has the densest atmosphere? What is
this planet’s atmosphere made of? What consequence does this dense
atmosphere have on the temperature of the planet?