Questions with the keyword 'force'

• How much mass does an object need to have for its gravitational forces to pull it into a spherical shape? by doppler to Adam, Sheila, SuzieCategory: Space Comments: (No comments so far )
• Why exactly does light slow down when it travels from a vacuum into (say) glass? I assume that gravitational forces by doppler to Adam, Rob, Sheila, SuzieCategory: General Comments: (So far, one comment )
• If we are all made up of empty space down to the 10^-5 degree ( thats 99.9999%!) why can we not walk straight through by ddkcdk to Adam, Geoff, Rob, Sheila, SuzieCategory: General Comments: (so far, 5s comments )
• Why is gravity so weak compared to the other fundamental forces? by freddie to Adam, Geoff, Rob, Sheila, SuzieCategory: Space Comments: (No comments so far )
• What causes the nuclear strong force? From what I know, it seems we have conveniently invented a force to explain why by freddie to Adam, Geoff, Rob, Sheila, SuzieCategory: General Comments: (No comments so far )
• After a truly massive star has fully converted its core to Iron-56, and nuclear fusion can no longer take place, what by kraknor to Adam, Geoff, Rob, Sheila, SuzieCategory: Space Comments: (No comments so far )