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
Illusion [34]
3 years ago
9

How does earth's magnetic field behave through long periods of geologic time?

Physics
2 answers:
I am Lyosha [343]3 years ago
7 0
It Irregularly Reverses. I got the answer right on the test.
Roman55 [17]3 years ago
4 0

Answer: Magnetic field reverses.

Explanation:

The magnetic field of the Earth is generated due to the presence of iron and other magnetic materials in molten form in the outer core of the Earth. History suggests that the magnetic field of the Earth was in a reversed states during stone age. And it might happen in future. The domains realign as the Earth is continuously in motion. When the reversed domains dominate, magnetic field reversal occurs.

You might be interested in
If you use a horizontal force of 33.0 N to slide a 11.0 kg wooden crate across a floor at a constant velocity, what is the coeff
alukav5142 [94]

Answer:

μ= 0.3

Explanation:

Given that

F= 33 N

m = 11 kg

Given that crate is moving with constant velocity is means that acceleration of the crate is zero.If acceleration of the system is zero then the total force on the system will be balance.

Therefore

F= Friction force

F= μ m g

μ=Coefficient of friction

33 = μ x 10 x 11                       ( take g= 10 m/s²)    

3 = 10 μ

μ= 0.3

Therefore coefficient of friction will be 0.3 .

3 0
3 years ago
A circuit has resistors R 1 = 468 Ω and R 2 = 125 Ω R1=468 Ω and R2=125 Ω , and two batteries V 1 = 12.0 V and V 2 = 3.00 V V1=1
Greeley [361]

Answer:

0.0192A

Explanation:

Since, the reading of the galvanometer is 0 A, the voltage across the resistance R will be:

Step 1

VR = V2

VR = 3.00v

Step 2

Calculating the current through the resistance R as below,

IR = V1 - V2 /R1

IR = 12 - 3 /468

IR =0.0192A

7 0
3 years ago
Phyllis is calculating the path of a space probe that will travel to Pluto. On the way to Pluto, the probe will pass Mars, Satur
inysia [295]

Answer:

Jupiter

Explanation:

4 0
2 years ago
Read 2 more answers
A 50.0 kg woman climbs a flight of stairs 6.00 m high in 15.0 s. How much power does she use.
WITCHER [35]

Her weight = (mass) · (gravity) = (50kg) · (9.8 m/s²)

Work = (weight) · (height) = (50kg) · (9.8 m/s²) · (6 m)

Power = (work) / (time) = (50kg) · (9.8 m/s²) · (6 m) / (15 s)

Power = (50 · 9.8 · 6 / 15) · (kg · m² / s³)

Power = 196 (kg · m / s²) · (m) / s

Power = 196 Newton-meter/second

<em>Power = 196 watts</em>

6 0
3 years ago
How can you tell the difference between chemical sedimentary rocks and intrusive<br> igneous rocks?
Nookie1986 [14]

Answer:

Sedimentary rocks are usually formed under water when grains of broken rocks are glued together while igneous rocks form when melted rock (magma or lava) cools and metamorphic are rocks that once were igneous or sedimentary rocks but have been changed by pressure and temperature.

4 0
3 years ago
Read 2 more answers
Other questions:
  • An airplane flies in a loop (a circular path in a vertical plane) of radius 200 m . The pilot's head always points toward the ce
    5·1 answer
  • Humid air breaks down (its molecules become ionized) in an electric field of 4.99 x 10^6 N/C. In that field, what is the magnitu
    11·1 answer
  • Rihanna can go from 0-60 miles per hour in 3.5 seconds. Calculate the acceleration.
    11·1 answer
  • Calculate how much work is done if a current of 2A flows through a potential difference of 12V for 2 minutes
    14·1 answer
  • A baseball player runs 27 m from third base to home plate in 3.2 s. What is
    14·2 answers
  • A tank is 3 m long 1 m wide and 0.5 m deep is filled with oil which weighs 12000 N
    12·1 answer
  • In an RC-circuit, a resistance of R=1.0 "Giga Ohms" is connected to an air-filled circular-parallel-plate capacitor of diameter
    15·1 answer
  • Sobre un cuerpo de 700 g de masa que se apoya en una mesa horizontal se aplica una fuerza de 5N en la dirección del plano. Calcu
    6·1 answer
  • When we dissolve a substance in water, a -------- is formed
    6·2 answers
  • A box of unknown weight is 1 m away from the fulcrum. To balance the sides, a student applies a force of 4 N at a distance of 3
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!