Aplanet's temperature depends on its distance from the sun as well as the strength of its greenhouse effect. let's remove the effect of distance from the sun by just considering how the temperature of a planet changes due to the presence of its atmosphere. calculate the difference in temperature for each planet with and without its atmosphere, and then rank the planets in order of increasing greenhouse effect.

earth, venus, mars

Identify the correct relation showing that the radius r of the orbit of a moon of a given planet can be determined from the radius r of the planet, the acceleration of gravity at the surface of the planet, and the time τ required by the moon to complete one full revolution about the planet. determine the acceleration of gravity at the surface of the planet jupiter knowing that r = 71 492 km and that t= 3.551 days and r= 670.9 × 10^3 km for its moon europa.