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julia-pushkina [17]
3 years ago
12

Which statement correctly describes the Earth's magnetic field?

Physics
2 answers:
Kisachek [45]3 years ago
7 0
"<span>The geomagnetic north is similar to the south pole of a magnet" is the statement among the following statements given in the question that correctly describes the Earth's magnetic field. The correct option among all the options that are given in the question is the second option. I hope the answer helps you.</span>
Zielflug [23.3K]3 years ago
7 0

Answer:

the geomagnetic north is similar to the south pole of a magnet

Explanation:

The terrestrial magnetic field is what makes compasses possible, used for location in space. Thanks to this invention, the great navigations could happen. The terrestrial magnetic field prevents the entry of particles with high speed coming from the Sun (solar wind). Upon reaching the Earth's magnetic field, these particles that make up the so-called solar wind are deflected because of the electrical charge they have. If they could reach the Earth's surface, they would damage and prevent communication by radio waves, TV, internet, etc.

An important statement about the Earth's magnetic make-up is that the geomagnetic north is similar to the south pole of a magnet.

The dynamo theory is the most accepted for explaining the Earth's magnetic field. According to this idea, iron and nickel in a state of fusion, at about 3,000 km of depth, move generating electric currents that cause the magnetic field.

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If Steve throws the football 50 meters in 3 seconds, what is the average speed of the football? Speed = distance / time Question
leva [86]

Answer:

A. 16.67 m/s

Explanation:

Speed or velocity refers to the rate of change in distance over a change in time. That is;

Speed = Distance ÷ time

Where;

Speed is in metre/seconds

Distance is in metre

Time is in seconds.

In this question, Steve throws a football 50 meters in 3 seconds. The average speed can be calculated this:

S = D/t

Where; d = 50m, t = 3s

S = 50/3

S = 16.6666666

S = 16.67m/s

5 0
3 years ago
A crane lifts an l-bean to a height of 30 meters giving it a potential energy of 108,486). What is the mass of the I-beam?
andrew-mc [135]

369 kg

Explanation:

Step 1:

We know that the expression for potential energy is

PE = mgh

where, m =Mass

            g = Acceleration due to gravity

            h Height

Step 2:

Here m = ?

         PE = 108486

         h = 30 m

          g = 9.8 ms⁻²

108486 = 30 * 9.86 * m

m= 108486 / (9.8*30) = 369 kg

5 0
3 years ago
What happens to the energy "lost" by a machine?
Savatey [412]

I would say A, although it depends on what kind of machine. If it does not recycle, then most likely C. I would be able to give more context based on what kind of machine it is.

3 0
3 years ago
Read 2 more answers
What are the variables do you think to be considered to determine the acceleration of an object?
Bingel [31]
The two variables that you need to measure are velocity (and any changes in velocity) and time intervals (where velocity changes)
8 0
3 years ago
Explain how the diffraction of light shows that light behaves like a wave.
wolverine [178]

Answer: Particles cannot bend around the edges of an obstacle, as light waves does.

Explanation:

Diffraction happens when a wave (mechanical or electromagnetic wave) meets an obstacle or a slit .When this occurs, the wave bends around the edges of the obstacle or passes through the opening of the slit that acts as an obstacle, forming multiple patterns with the shape of the aperture of the slit.

Note this phenomenon is a characteristic of waves behaviour and not particles, because <u>particles cannot bend around the edges of an obstacle</u>, as waves (light waves in this case) does.

7 0
4 years ago
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