The density of solid aluminum is 2.70 . if a 1g piece of aluminum is dropped in a cup of water, it will . (the density of water is 1.00 g/cm3 )

when the use of electricity burdens the fuse and miniarure circuit beakers and there is a possibility of a fuse then they automatically cut off the electricity supply to your homes and after you fix the problem u jzt switch it on and it continues the supply of electricity to ur homes

if the thermos has a vacuum innner, then heat through conv currents and conduction are reduced = vacuum flask