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3 years ago

Magnetic reversals have helped to support

1 answer:

5 0

Magnetic reversals have helped support the theory of sea floor spreading, that Harry Hess, professor of geology had put forth. He proposed that the ocean progressively widens as new sea floor is created along a crack that follows the crest of ridges found in the middle of the ocean.

In 1963, Fred Vine, Drummond Mathews and others found that the crust surrounding the mid-ocean ridges showed alternating bands, each band magnetized with a polarity opposite the surrounding bands. They suggested that as new sea-floor crust was formed around the crack or rift in the mid-ocean ridge, it magnetized differently depending upon the polarity of the planet at that time, supporting the theory of Harry Hess.

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Which phenomenon support only the wave theory of light? Check all that apply

lys-0071 [83]

Answer:

Diffraction and Interference of light support the wave theory of light.

Explanation:

Complete Question

Which phenomena support only the wave theory of light? Check all that apply.

1.reflection

2.refraction

3.diffraction

4.interference

5.photoelectric effect

Solution

There are two theories/schools of thoughts that light possesses wave and particle properties.

The wave properties of light explain that light is made as a result of interactions of electric and magnetic fields, hence, light is regarded as an electromagnetic wave that propagates without the need for a material medium and moves in a direction perpendicular to the direction of the oscillations or direction of the cause/source of the light waves.

Properties that support the wave properties of light are diffraction (ability to navigate or bend around obstacles) and Interference (two light waves can combine or superimpose to form a single resultant light wave with amplitude greater, lower or equal to the amplitudes of the two constituting light waves).

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4 years ago

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Please need help with this

PtichkaEL [24]

Through is the answer to your question

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4 years ago

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Find the displacement of a hiker if he travels 3.0 m N and then 2.5 m S.

ankoles [38]

Answer:

.5 m N

Explanation:

Displacement just means distance from starting point, so moving 3 m north then 2.5 m south is the same as if you took 3 steps forward then 2.5 steps backward. The end point is only .5 away from the start point.

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3 years ago

A ball starts to roll up a slope with a slope with a velocity of 5m/s and comes to a stop after rolling 5.0m up the slope. Assum

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3 years ago

What is the magnetic field strength at point 1 in the figure? (figure 1)

Lana71 [14]

The magnetic field strength at point 1 in the figure will be 6.67 ×10⁻⁵ T.

<h3>What is magnetic field strength?</h3>

The number of magnetic flux lines on a unit area passing perpendicular to the given line direction is known as induced magnetic field strength .it is denoted by B.

The magnetic field strength is found as;

$B = \frac{\mu_0I}{2r} \\\\ \mu_0 = 4 \PI \times 10^{-7}$

In the formula,I denote current, and r denotes the distance between the point and the current carrying wire and magnetic field due to current in the bottom wire.

At point 1, the net magnetic field is found as the sum of magnetic field due to current in the top wire.

$\rm B_{net} = B1_+(-B_2)$

$B = \frac{ 4 \PI \times 10^{-7}I}{2r} \\\\ \rm B_{net} = B_1_+(-B_2)\\\\ \rm B_{net} = \frac{4 \times \pi \times 10^{-7} \times 10}{2 \times \pi \times 0.02} -\frac{4 \times \pi \times 10^{-7} \times 10 }{2 \times \pi \times 0.06} \\\\\ \rm B_{net} = 6.67 \times 10^{-5} T$

Hence, the magnetic field strength at point 1 in the figure will be 6.67 ×10⁻⁵ T.

To learn more about the strength of induced magnetic field, refer:

brainly.com/question/2248956

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2 years ago