All categories

3 years ago

Using evidence from the article, defend the concept that

2 answers:

6 0

Answer: Scientists found evidence of Earth's magnetic field reversal in rocks on the ocean floor at plate boundaries. These rocks have alternating polarity due to magnetization that were during their cooling period. Using radiometric dating, scientists estimate that reversals occur approximately every several hundred thousand years.

Explanation: The earth’s magnetic field impacts into the alignment of elements like iron in rocks due to Ferro-magnetization. This causes the elements to align in a north-south direction. Accordingly scientists have studied this alignment in ancient rocks, such as in the layers of sedimentary rocks, and realized that the earth magnetic field has flipped around 200,000 to 300,000 in the last 20 million years.

kap26 [50]3 years ago

3 0

Answer:

Scientists found evidence of Earth's magnetic field reversal in rocks on the ocean floor at plate boundaries. These rocks have alternating polarity due to magnetization that occurred during their cooling period. Using radiometric dating, scientists estimate that reversals occur approximately every several hundred thousand years.

Explanation:

You might be interested in

A car moves at a speed of 40 miles per hour for half an hour and then at 60 miles per hour for two hours. What is the average sp

katovenus [111]

Answer:

The average speed for the entire trip is 56 miles/hour.

Explanation:

It is given that,

Initially, the car moves with a speed of, v₁ = 40 miles/hour

Initial time, t₁ = 0.5 hours

Distance covered during time t₁,

$d_1=v_1t_1$

$d_1=40\times 0.5$

$d_1=20\ miles$

Then it travels with a speed of, v₂ = 60 miles/hour

Then time taken, t₂ = 2 hours

Distance covered during time t₂,

$d_2=v_2t_2$

$d_2=60\times 2$

$d_2=120\ miles$

The average speed of the car can be calculated as :

$v=\dfrac{d_1+d_2}{t_1+t_2}$

$v=\dfrac{120+20}{0.5+2}$

v = 56 miles/hour

So, the average speed of the car for the entire trip is 56 miles/hour. Hence, this is the required solution.

7 0

3 years ago

Two uniform solid spheres of the same size, but different mass, are released from rest simultaneously at the same height on a hi

SpyIntel [72]

Answer:

options A and C

Explanation:

Since, the spheres are of same size and rotational speed of the sphere are not dependent on their masses. So, both the sphere will reach the bottom of the at the same time with the same speed. But their kinetic energies are different.

So, options A and C are correct.

4 0

3 years ago

Static charges can be applied to neutral objects by friction, induction or conduction. What do all of these methods utilize to c

Oksana_A [137]

The s<span>tatic charges that are applied to neutral objects by friction, induction or conduction main utilise the creation of electrons or electric charges. Electrons flow forming a current into a specific medium known as a conductor which is mainly due to a significant potential difference between two points.</span>

3 0

3 years ago

Read 2 more answers

To practice Problem-Solving Strategy 27.1: Magnetic Forces. A particle with mass 1.81×10−3 kgkg and a charge of 1.22×10−8 CC has

Roman55 [17]

Answer:

The magnitude of the acceleration is $a = 0.33 m/s^2$