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3 years ago

Which statement correctly describes magnetic field lines?

2 answers:

7 0

I believe the correct answer would be they join north pole to south pole. The direction of these lines always goes from the direction of north to south pole. These lines forms loops in order to favor the way which requires or has less resistance. Hope this helps.

Mashcka [7]3 years ago

4 0

Magnetic field lines are presentation of magnetic field on paper

There is no real existence of magnetic field lines in the surrounding of a magnetic material but it is an hypothetical way to represent the magnetic field variation.

There are several rules to draw the field lines on paper which are as following

1. magnetic field lines start from north pole and ends at south pole

2. density of field lines shows the strength of magnetic field

3. tangent to the magnetic field line represents the direction of magnetic field so there can not exist a point where two magnetic field lines will intersect

so as per all above rules the correct answer should be

A. They join north pole to south pole.

You might be interested in

Which one of Newton's three laws of motion deals with action-reaction?

Nikitich [7]

Explanation:

Newton's third law states that when two bodies interact, they apply forces to one another that are equal in magnitude and opposite in direction. The third law is also known as the law of action and reaction.

6 0

3 years ago

A box is pushed 40 m by amover. The amount of work done was 2,240 j. How much force was exerted on the box?

Serga [27]

56 Newtons bc w=F×D so if you divide by D on both side you get w/D=F

6 0

2 years ago

Read 2 more answers

A woman steps in front of a child to keep him from running off. which term best describes this example? negative work positive w

lana [24]

Answer:

negative force

Explanation:

Here woman is applying the force to stop the child or to prevent him from running.

Here we know that the force applied by the woman is opposite to the motion of child but here the child is not displaced by this applied force but the child is only prevented his running.

So here the work done by the woman is zero as there is no displacement by this force.

But here we can say that the the force of woman is against the motion of child so here this force is opposite force and hence it is termed as negative force here.

so correct answer will be

negative force

4 0

3 years ago

Read 2 more answers

Help! Please???

Andre45 [30]

Well for the The weather on the coast of Virginia is probably warm and dry. A cold front would likely bring rain or rainstorms. would be B Rainstorms

3 0

3 years ago

a uniform disc and hollow right circular cone have the same formula for their moment of inertia when rotating about the central

Romashka-Z-Leto [24]

Answer:

This is as a result that about the central axis a collapsed hollow cone is equivalent to a uniform disc

Explanation:

The integration of the differential mass of the hollow right circular cone yields

$I=\int\limits dmr^2 = \int\limits^a_b {\frac{2Mxr^2}{R^2 +H^2} } \, dx = \frac{2MR^2dx}{(R^2 +H^2)^2} \frac{(R^2 +H^2)^2}{4} = \frac{1}{2}MR^2$

and for a uniform disc

I = 1/2πρtr⁴ = 1/2Mr².

6 0

3 years ago