Answer:
Demagnetization processes include heating past the Curie point, applying a strong magnetic field, applying alternating current, or hammering the metal.
Explanation:
The correct option is D.
During hurricane, the most important thing is to get people out to safety in order to save their lives. Training the community about safety evacuation route is by far the better idea because it provide immediate safety from the natural hazard. The second idea is not a good one at all, because if food are stocked in every house in the community, the food will be destroyed alongside other things during the hurricane.
<u>Answer:</u> The uncertainty in proton's momentum is 
<u>Explanation:</u>
The equation representing Heisenberg's uncertainty principle follows:

where,
= uncertainty in position = d = 
= uncertainty in momentum = ?
h = Planck's constant = 
Putting values in above equation, we get:

Hence, the uncertainty in proton's momentum is 
Answer:
2726.54 J/K
Explanation:
Entropy change = 
where
m = mass of water = 450g = 0.45kg
= 2.26 MJ/kg = 2260000 J/kg
T = temperature at which water change from liquid to steam = 100 degree Celsius = 272 + 100 = 373 degree kelvin.
Entropy change =
= 2726.54 J/K