Answer:
It should be fibre optic cable , buried underground
Velocity is about direction traveled in comparison to speed which is just distance with out direction
Answer:
The lid becomes tighter
It becomes tighter because metals have a lower heat capacity than glass meaning their temperature drops (or increases) much faster than glass for the same energy change. So in this example, the metal will contract faster than the glass causing it to be more tighter around the glass.
Answer:
V= 2.7 [v]
Explanation:
The value of the resistance is given by:

so:

We can calulate the voltage dropped using the Ohm's law:
