Anewly discovered planet has twice the mass of the earth, but the acceleration due to gravity on the new planet’s surface is exactly the same as the acceleration due to gravity on the earth’s surface. what is the radius rp of the new planet in terms of the radius r of earth?

According to a recent survey, the local government wants to classify people according to their income earning capacity. they want to do so in order to provide special facilities for the poor. who among the four individuals will be classified as poor? a. joseph earns $2.25 per day b. maria earns $1.50 per day c. rosita earns $2.00 per day d. tim earns $ 1.00 per day