Physics, asked by 1431474, 1 year ago

Could anyone please answer this. Do you get a lot of points? Ohhhhh yes you will...

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Answered by sanaya2019
0

don't know the answer in clear just have an idea little bit in guess


sohanq8: It’s ok a little is better than nothing
sanaya2019: hmm thats right
Answered by uknaresh1234radhe
0

LOOK

The hot radiator transfers heat to the nearby air

when air molecules collide with the radiator surface.

The air is also heated by infra-red radiation.

The hot air near to the radiator expands and increases

in volume. Hot air expands because the particles move

further apart as they get hotter (see the structure of a gas).

This makes the density of the hot air decrease and it starts

to rise upwards. The colder air above it gets pushed along

to the right and then circulates as shown by the arrows.

The arrows show how the convection currents move.

As the hot air moves around the room, it loses its

heat by collision with the walls, ceiling and the objects

in the room. Finally the colder air circulates near to

the radiator where it is heated and the whole process

repeats itself. The efficiency of convection can be

improved by placing shiny metal foil behind the radiator.

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