A small amount of air is introduced into the vacuum above the mercury in a mercury barometer tube.
The mercury level goes down.
Why does the mercury level go down?
1 )
The air molecules cool the mercury and make it contract.
2 )
The air molecules decrease the pressure above the mercury.
3 )
The air molecules heat the mercury and make it expand.
The air molecules increase the pressure above the mercury.
تحلیل ویدئویی تست
منتظریم اولین نفر تحلیلش کنه!
پرسش و پاسخ های مشابه
سوال کنید یا به سوالات دیگران پاسخ دهید ...