
Hi, anyone can advise why the answer is (2)? Thanks
Hi, anyone can advise why the answer is (2)? Thanks
Heat expansion changes the volume of the metal ball but not its mass hence it looks bigger but the mass remains the same. If you understand density, it means the metal ball has become less dense as the volume increases.
Mass (constant) = Volume(increases) x Density (decreases)
Thank you very much sushi88. God bless you. 🙂