a) An electric bell is suspended by thin wires in a glass vessel and set ringing. Describe and explain what happens if the air is gradually pumped out of the glass vessel.b) Why cannot a sound be heard on the moon? How do astronauts talk to one another on the surface of moon?

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a) An electric bell is suspended by thin wires in a glass vessel and set ringing. Describe and explain what happens if the air is gradually pumped out of the glass vessel.b) Why cannot a sound be heard on the moon? How do astronauts talk to one another on the surface of moon?

a) An electric bell is suspended by thin wires in a glass vessel and set ringing. Describe and explain what happens if the air is gradually pumped out of the glass vessel.b) Why cannot a sound be heard on the moon? How do astronauts talk to one another on the surface of moon?

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a) An electric bell is suspended by thin wires in a glass vessel and set ringing. Describe and explain what happens if the air is gradually pumped out of the glass vessel.b) Why cannot a sound be heard on the moon? How do astronauts talk to one another on the surface of moon?

a) An electric bell is suspended by thin wires in a glass vessel and set ringing. Describe and explain what happens if the air is gradually pumped out of the glass vessel.b) Why cannot a sound be heard on the moon? How do astronauts talk to one another on the surface of moon?

1 Answers

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