Question: An iron nail does not pick up paper clips as a magnet would. What can be concluded about the structure of the iron nail?
Answer: It has domains that are not aligned.
Explanation: because the magnet is not allined its not gonna pick up anything metal cause its not alligned
question answered by
(jacemorris04)
Answer:
usually x-ray tube filaments are devices that limit the current flow i.e. current cannot easily pass through them or we can say that they are current limited devices. So to allow fine electron transmission control by filament heating current, rhenium must not be used in x-ray tube filaments.
Answer:
196J
Explanation:
Given parameters:
Mass of skateboard = 1kg
Height off the ground = 20m
Unknown:
Potential energy = ?
Solution:
The potential energy is the energy due to the position of a body above the ground.
It is mathematically expressed as:
Potential energy = mass x acceleration due gravity x height
Potential energy = 1 x 9.8 x 20 = 196J
