Determine the mass density, specific volume and specific weight of a liquid whose specific gravity is 0.85​

If you try to move a piano and are unable to move it, did you perform any work in the scientific sense of the word? yes? or no? this question is worth 20 points! let it be correct!

If you try to move a piano and are unable to move it, did you perform any work in the scientific sense of the word? yes no correct anwser get brainliest

The half-life of a certain element is 100 days. how many half-lives will it be before only one eighth of this elementremains?