(a) A proton is known to be within an interval ±6 fm (the radius of a large nucleus). Roughly what is the minimum uncertainty in its velocity? Treat this problem as one-dimensional. (b) An air-rie pellet has a mass of 20 g and a velocity of 100 m/s. If its velocity is known to an accuracy of ±0.1%, what is the minimum possible uncertainty in it's position?

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.

the closer the planet is to the sun, the larger the gravity