What allows us to stand upright and keeps us from falling through the ground? a. while gravitational force pulls us down, the opposing force from the ground pushes up and balances out the two forces c. while gravitational force pulls us down, the ground is pulling us down too b. the force of gravity is stronger than the force of the ground pushing up on us d. the force of the ground pushing up on us is stronger than the force of gravity select the best answer from the choices provided a

Will give brainliest! which statement best describes the difference between strong nuclear forces and weak nuclear forces? weak nuclear forces are involved when certain types of atoms break down. strong nuclear forces are responsible for holding atoms' nucleus together. weak nuclear forces hold bonds between atoms together. strong nuclear forces hold together the nucleus of an atom. strong nuclear bonds prevent atoms from falling apart. weak nuclear bonds prevent compounds from falling apart. strong nuclear forces are involved in breaking electrons from their shells. weak nuclear forces hold protons in the nucleus.

Arigid tank is divided into two equal parts by a partition. one part of the tank contains 3 kg of compressed liquid water at 400 kpa and 60°c while the other part is evacuated. the partition is now removed, and the water expands to fill the entire tank. determine the entropy change of water during this process, if the final pressure in the tank is 40 kpa. use steam tables.

Am i correct on these two physics questions?