Why do the north and south poles of these magnets attract each other? A. The magnetic fields of the two magnets repel each other
.
O O O
B. They have two different magnetic fields.
C. The opposite magnetic poles of the two magnets face each other.
D. They have opposite electrical charges.
O O O
B. They have two different magnetic fields.
C. The opposite magnetic poles of the two magnets face each other.
D. They have opposite electrical charges.
2 answers:
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Answer:
1 second later the vehicle's velocity will be:
5 seconds later the vehicle's velocity will be:
Explanation:
Recall the formula for the velocity of an object under constant accelerated motion (with acceleration ""):
Therefore, in this case and
so we can estimate the velocity of the vehicle at different times just by replacing the requested "t" in the expression:
Answer:
-0.045 N, they will attract each other
Explanation:
The strength of the electrostatic force exerted on a charge is given by
where
q is the magnitude of the charge
E is the electric field magnitude
In this problem,
(negative because inward)
So the strength of the electrostatic force is
Moreover, the charge will be attracted towards the source of the electric field. In fact, the text says that the electric field points inward: this means that the source charge is negative, so the other charge (which is positive) is attracted towards it.