1.

An electric bell is suspended in an airtight vacuum jar. The bottom of the jar is connected to an air pump, as shown in the given figure. The air pump can fill air in the jar.What will happen when the switches of both the bell and the pump are pressed?

Answer»

An electric bell is suspended in an airtight vacuum jar. The bottom of the jar is connected to an air pump, as shown in the given figure. The air pump can fill air in the jar.



What will happen when the switches of both the bell and the pump are pressed?





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