answersLogoWhite

0

is it a stethoscope? if it is, then my answer is correct. they don't feel cold. they check your heartbeat from different directions. the end works as a speaker. it has a tiny hole which collects sound and the ear plugs emphasize it because metal is not only a good conductor of electricity, but also a good conductor of sound waves.

User Avatar

Wiki User

13y ago

What else can I help you with?