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4 years ago

As sea floor spreading occurs, the oceanic plate _______.

Physics

1 answer:

Ira Lisetskai [31]4 years ago

8 0

Becomes older

Explanation:

As sea floor spreading occurs at divergent margins, the oceanic plate becomes older. Younger plate margin are the closest to the margin whereas the older plates bushes backward away from the spreading centers.

The idea that the sea floor spreads was postulated by Harry Hess shortly after the second world war around the 1960's.
At divergent margins new crust materials from the mantle are brought to the surface.
They crystallize and settle at the flanks of plate margins.
Older ones are pushed backward away from the margin into far away subduction zones.

Learn more:

Sea floor spreading brainly.com/question/9912731

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A student weighing 200N climbs a flight of stairs 7.0m high in 8s. What power is required to perform this task?

noname [10]

Answer:

Power required, P = 175 watts

Explanation:

It is given that,

Weight of a student, F = mg = 200 N

The student climbs a flight of stairs of height, h = 7 m

Time taken, t = 8 s

We have to find the power required to perform this task. Work done per unit time is called the power required. Mathematically, it is given by :

$P=\dfrac{W}{t}$

W = work done

t = time taken

$P=\dfrac{mgh}{t}$

$P=\dfrac{200\ N\times 7\ m}{8\ s}$

P = 175 watts

Hence, the power required to complete this task is 175 watts.

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4 years ago

Three students each hold basketballs with the same masses at varying heights. One basketball is held 2 feet above the ground. An

Advocard [28]

The Basketball with the greatest gravitational potential energy is : Basketball 4 feet above the ground ( c )

<u>Given data :</u>

masses = constant

H₁ = 2 ft

H₂ = 3 ft

H₃ = 4 ft

g = 9.81 m/s²

<h3><u>Procedure to determine the basketball with the greatest gravitational P.E </u></h3>

we will apply the equation below

Gravitational potential energy ( U ) = mgh

For ball 1

U = 2 * 9.81 = 19.62

For ball 2

U = 3 * 9.81 = 29.43

For ball 3

U = 4 * 9.81 = 39.24

From the calculations the basketball with the greatest gravitational potential energy is the basketball at 4ft above the ground

Learn more about gravitational potential energy : brainly.com/question/15896499

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3 years ago

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Ira Lisetskai [31]

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Ohm's law relates the current, voltage, and resistance in a circuit. Use Ohm's law to determine what will happen to the remainin

krek1111 [17]

Answer:

R = ½ R₀

Explanation:

This is an exercise in Ohm's law,

V = IR

in the initial case

V₀ = I₀ R₀ (1)

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I = 2 I₀

V₀ = I R

we substitute

V₀ = 2 I₀ R

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we replace by equation 1

R = ½ R₀

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