Noah drops a rock with a density of 1.73 g/cm3 into a pond. will the rock float or sink?

Two friends are having a conversation. anna says a satellite in orbit is in freefall because the satellite keeps falling toward earth. tom says a satellite in orbit is not in freefall because the acceleration due to gravity is not 9.80 m/2 . who do you agree with and why?

If a balloon is taken outside on a very cold day, what will occur?

Positrons are spontaneously emitted from the nuclei of