1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Andru [333]
3 years ago
12

Which statements about Earth’s core help explain Earth’s magnetic field? Check all that apply.

Physics
2 answers:
nalin [4]3 years ago
7 0
<span>The inner core is liquid and moving.</span>
siniylev [52]3 years ago
4 0

Answer:

The inner core is solid.

The outer core is liquid and moving.

Earth’s core is composed of iron and nickel.

Explanation:

Convection currents are produced in the outer liquid core. This motion together with the Earth's rotation creates a system of electrical currents, since it is composed of metals such as iron and nickel. The magnetic fields generated by the electric currents align, creating the Earth's magnetic field. The solid inner core acts as a stabilizer of the magnetic field generated by the liquid outer core.

You might be interested in
A soccer ball kicked with a force of 12.5 N accelerates at 6.2 m/s’ to the right. What is the mass of the ball? Answer in units
stepladder [879]

Answer:

m = 2.01[kg]

Explanation:

This problem can be solved using Newton's second law which tells us that the force applied on a body is equal to the product of mass by acceleration.

F =m*a

where:

F = force = 12.5 [N]

m = mass [kg]

a = acceleration = 6.2 [m/s²]

12.5=m*6.2\\m = 2.01[kg]

3 0
3 years ago
The sun rotates once in 25.05 days. That is 601.2 hours. so the sun's rotational speed is 0.0017 rotations per hour. what is the
Margaret [11]

Answer:

v=2019.09\ m.s^{-1}

Explanation:

Given:

  • time taken by the sun to complete one revolution, t=601.2\ hr
  • radial distance of the sunspot, r=6.955\times 10^8\ m.s^{-1}

<u>Therefore, angular speed of rotation of sun:</u>

\omega=\frac{2\pi}{601.2\times 3600} \ rad.s^{-1}

<u>Now the tangential velocity of the sunspot can be given by:</u>

v=r.\omega

v=6.955\times 10^8\times \frac{2\pi}{601.2\times 3600}

v=2019.09\ m.s^{-1}

4 0
3 years ago
Evaluate the gravitational potential energy between two 5.00-kg spherical steel balls separated by a center-tocenter distance of
navik [9.2K]

Answer:

U = 8.30×10-⁹J

Explanation:

m1 = m2 = 5.00kg masses of the spheres

d = 15.0cm = 15×10-²m

r = 5.10cm = 5.10×10-²m

R = d + r = 15×10-² + 5.10×10-²

R = 20.10 ×10-²m = 0.201m

G = 6.67×10-¹¹Nm²/kg²

U = Gm1×m2/R = potential energybetween the spheres

U = 6.67×10-¹¹×5.00×5.00/0.201

U = 8.30×10-⁹J

7 0
2 years ago
What enables the human eye to "see" light in the infrared range of the electromagnetic spectrum?
Phantasy [73]
A thermogram<span> enables the human eye to "see" light in the infrared range of the electromagnetic spectrum.</span>
6 0
2 years ago
The thermal expansion of a solid is caused by:
Shkiper50 [21]

Answer:

C

Explanation:

The increase in the distance between equilibrium positions for the vibrating atoms.

6 0
3 years ago
Other questions:
  • The gravitational force between Earth and the Sun is a two-way force. Both the planet and the Sun attract each other. However, E
    11·1 answer
  • What are the differences and the similarities between psychology and the social science
    11·1 answer
  • The number of molecules in a container is tripled and the kelvin temperature doubled. the volume remains unchanged. the new pres
    12·1 answer
  • A lawyer drives from her​ home, located 88 milesmiles east and 1818 milesmiles north of the town​ courthouse, to her​ office, lo
    13·1 answer
  • 1. The hockey puck is given an initial speed of 20.0m/s on a frozen pond. The
    5·2 answers
  • HELP FAST!!!!!!!
    10·2 answers
  • The ideal mechanical advantage of a machine reflects the increase or decrease in force there world be without friction, it is al
    15·1 answer
  • 4. A train is travelling at a speed of 60 km/ h. Brakes are applied so as to produce a uniform
    8·1 answer
  • If the change in kinetic energy of a tennis ball hit by the racket
    5·1 answer
  • What are successfulness of the Competition policy in South Africa?​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!