Question

Answer this for me, Please and Thank you! >.<


A vacuum flask keeps its contents warmer or cooler than the surrounding environment for a length of time. Its consists of two flasks, one inside the other, that connect at the neck. The space between the two flasks is completely empty of air.


1. How does the design of a vacuum flask reduce heat transfer by conduction? (1 point)

A. One flask is smaller than the other flask.
B. One flask is more reflective than the other flask.
C. There is no air between the two flasks.
D. There two flasks do not touch each other, except at the neck.

Answer 1

the flasks dont have point of physical contact, so thermal energy can't be exchanged.

Answer 2

C. ????

Answer 3

nope, that would be the answer if the q asked about convection. Conduction is about physical contact.

Answer 4

I think the answer is the lid of the vacuum flask made up of plastic. There is no correct answer here.

Answer 5

lol where does it say the lid is made of plastic?

Answer 6

That's the normal way

Answer 7

the normal way of what?