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A heat pump? it might be furnace but i think its heat pump
Answer:
A. Their same forces repel each other, and their opposite forces attract each other.
Explanation:
As we know by the property of electric charge that similar charges repel each other and opposite charges attracts each other
So here we have similar situation in magnets also
Two similar poles or like poles of magnet i.e. North - North poles or South - South poles always repel each other
And also we can see that opposite poles of magnet each other i.e. North pole and south pole always attract each other.
SO here correct answer is
A. Their same forces repel each other, and their opposite forces attract each other.
It is tile cause tile is made out of stone which is a good conductor
Answer:
530.5 Hz
Explanation:
Given :
C=0.75 micro
L=120 mH
Reactance capacitor can be determined by
=
where c =capacitor
= 
Reactance inductor can be determined by
As they are in series so ,
On solving these value we get
As we know that
f = 
=
530.5 Hz
