The time period is given by the expression T = 2 pi R / v
R-the radius of the earth and v- the speed with which the equatorial part moves.
Let us assume the speed to be the same. So as radius R is reduced to half of its value ie R/2 then the time period too is reduced to half. ie T/2
The answer depends on what characteristics being compared and the comparator. Possible examples:mass of earth to mass of sun (or a planet, or moon)radius of earth to radius of sun (or a planet, or moon)volume of earth to volume of sun (or a planet, or moon)mass of earth to its volumeperiod of rotation to period of revolutionorbital period to the average distance from the sunalbedo of earth to albedo of a planet, or moonThere are many other possibilities. Unfortunately, you have not specified any and so it is not possible to provide a more useful answer.
Venus has a radius of about 6,052 kilometers, which is about 95% of Earth's radius.
The acceleration due to gravity on the surface of the planet would be four times greater than that of Earth. This is because the acceleration due to gravity is directly proportional to the radius of the planet, and inversely proportional to the square of the radius. Since the radius of the planet is half that of Earth, the acceleration due to gravity would increase accordingly.
Because the Earth has 80 times as much mass as the Moon has, and the greater radius of the Earth is not enough to cancel the effect of the mass difference.
Venus' radius = 0.95 of Earth's Venus' mass = 0.815 of Earth's
7th period because atomic size down the group increases. And Alkali Earth metals are found only in Group 1. The element is in Group 1 and period 7
The Earth's radius is approximately 6,371 kilometers and 3,959 miles.
If you are a believer, then God did but if you are not, then nobody did. The radius of the earth existed and therefore ots radius did before there was any form of life on earth to invent it.
The radius of Earth is approximately 6,371 kilometers.
Mercury's radius is 0.3825 that of Earth Jupiter's radius is 11.209 that of Earth So: (0.3825/11.209)*100 = 3.41 percent.
The radius of Earth is about 0.95 times greater than the radius of Venus.
Europa: 1561 km radius Earth: 6371 km radius The diameter is twice the radius.