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3 years ago

Which statement correctly describes magnetic field lines?

Physics

2 answers:

coldgirl [10]3 years ago

5 0

Answer:

They never cross

Explanation:

Dennis_Churaev [7]3 years ago

3 0

Answer:

A. They never cross

Explanation:

The magnetic field lines cannot be crossed, since this would mean that there would be more than one value for the magnetic field at the same point, that is, at the point where the lines intersect. Therefore, the resulting magnetic field vector at a point in space, where the field takes place, is unique.

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A concave lens can only form a

solmaris [256]

<span>C. A concave lens can only form a virtual image, because they are thinner in the middle and thicker around the edges.</span>

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4 years ago

Which location would the selected items BEST fit on the nuclear energy diagram?

Sladkaya [172]

Your answer is c) Fusion

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4 years ago

Read 2 more answers

Satellites, A and B, each of mass m, are to be launched into circular orbits about Earth's center. Satellite A is to orbit at an

Volgvan

Answer:

0.63

Explanation:

We are given that

Radius of earth, $R_E=6370 km$

Radius of orbit A, $R_A=7590+6370=13960 km$

Radius of orbit B, $R_B=6370+15800=22170 km$

We have to find the ratio of the potential energy of satellite B to that of satellite A in orbit.

Potential energy of orbit A= $U_A=-\frac{GM}{R_A}=-\frac{GM}{13960}$

Potential energy of orbit B= $U_B=-\frac{GM}{R_B}=-\frac{GM}{22170}$

$\frac{U_B}{U_A}=\frac{13960}{22170}=0.63$

Hence,the ratio of the potential energy of satellite B to that of satellite A in orbit=0.63

8 0

4 years ago

1 point

77julia77 [94]

Answer:

They do this because it covers the whole surface which they are cleaning. the cleaner all hold the same charge and repel from each other and cover the whole surface. They want to do this to make sure the item that they cleaning is clean.

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3 years ago

Jose throws a ball at 92 mi/hr horizontally. If there were NO air resistance, how

Trava [24]

Answer:

It should be 92 mi/h

Explanation:

Because there is no air resistance there is nothing pushing against it to slow it down, so only the initial force and gravity are acting on the ball

7 0

3 years ago