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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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Sonja [21]
Answer: Not 100% sure but I think it’s C.

Hope this helps! ^^
4 0
3 years ago
A disk-shaped merry-go-round of radius 2.13 m and mass 175 kg rotates freely with an angular speed of 0.651 rev/s. A 55.4 kg per
GREYUIT [131]

Answer:

Explanation:

To find out the angular velocity of merry-go-round after person jumps on it , we shall apply law of conservation of ANGULAR momentum

I₁ ω₁ + I₂ ω₂ = ( I₁  + I₂ ) ω

I₁ is moment of inertia of disk , I₂ moment of inertia of running person , I is the moment of inertia of disk -man system , ω₁ and ω₂ are angular velocity of disc and man .

I₁ = 1/2 mr²

= .5 x 175 x 2.13²

= 396.97 kgm²

I₂ = m r²

= 55.4 x 2.13²

= 251.34 mgm²

ω₁ = .651 rev /s

= .651 x 2π rad /s

ω₂ = tangential velocity of man / radius of disc

= 3.51 / 2.13

= 1.65 rad/s

I₁ ω₁ + I₂ ω₂ = ( I₁  + I₂ ) ω

396.97 x  .651 x 2π + 251.34 x 1.65 = ( 396.97 + 251.34 ) ω

ω = 3.14 rad /s

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8 0
3 years ago
a college student produces about 100 kcal of heat per hour on the average what is the rate of energy production and joules
Bond [772]

Given:

Amount of heat produced = 100 kcal per hour

Let's find the rate of energy production in joules.

We know that:

1 calorie = 4.184 Joules

1 kcal = 4.184 Joules

To find the rate of energy production in Joules, we have:

\begin{gathered} Rate=100\ast4.184 \\  \\ \text{Rate}=418.4\text{ KJ/hour} \end{gathered}

Therefore, the rate of energy production in joules is 418.4 kJ/h which is equivalent to 418400 Joules

ANSWER:

418.4 kJ/h

6 0
1 year ago
Question 33
pantera1 [17]

Answer:

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Explanation:

The main reason why human ears can hear dolphins' vocalizations while under the water but cannot hear them well on land is because water is denser than air and air particles travel faster in denser particles.

Denser particles also ensures that the frequency of the waves move faster which in turn produces a faster and louder result.

3 0
3 years ago
PLEASE HELP AS FAT WILL GIVE BRAILIEST TO MOST SPECIFIC AND CORRECT ANSWER
Bas_tet [7]

Answer:

Time

Explanation:

8 0
3 years ago
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