-- <span>Does the width of a rubber band affect how far it will stretch?
-- How does the thickness of a material affect insulation?
You could take a guess at the answer to each of these,
and then test to see if your guess is correct.
</span>
Answer:
Technician B
Explanation:
Mixing of two refrigerants would result into sub-cooling which consequently damages the system. It’s important to note that checking the odor of refrigerant cannot be traced hence unreliable method for checking contaminated refrigerant. Therefore, refrigerant with more than 2% of a foreign refrigerant normally should be sent off for reclaiming or disposal
.
Answer:
i. rubbing the material against a magnet
ii. placing the material in a magnetic field of opposite polarity
iii. placing the material near a strong magnet
Explanation:
Ferromagnetic materials are majorly metals which can be easily attracted by a magnet. ferromagnetic materials are made up of domains, behaves as minute pieces of magnet. They can be rearranged to align when under the influence of an external magnetic field.
The alignment of the domains in a ferromagnetic material can be caused by either of the following: rubbing the material against a magnet, placing the material in a magnetic field of opposite polarity, placing the material near a strong magnet.