The theory of continental drift suggests that

1 answer:

6 0

The correct answer is this one:

<span>the continents have moved in the past and are still moving.

The theory of continental drift says that the continents are moving away slowly, today and in the past. In the past this has caused South America and Africa to drift apart, and it is driving the Americas to the west today.
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Which of the following physical properties would tell you about an element's mass per unit volume ratio?

Igoryamba

Well I can't see the following physical properties you talked about in the question.

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2 years ago

What is the power of a hair dryer if it uses 72,000 joules energy in 60.0 seconds

Vladimir [108]

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3 years ago

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A proton is released from rest at the origin in a uniform electric field in the positive x direction with magnitude 850 N/C. Wha

Gwar [14]

A proton is released from rest at the origin in a uniform electric field in the positive x direction with magnitude 850 N/C. The change in the electric potential energy of the proton-field system when the proton travels to x = 2.50m is -3.40 × 10⁻¹⁶ J (Option B)

<h3 /><h3>How is the change in electric potential energy of the proton-field system calculated?</h3>

Work done on the proton =Negative of the change in the electric potential energy of the proton field
In the given case, W = -qΔV
-W = qΔV
= qEcosθ
Therefore, work done on the proton = -e(8.50× $10^2$ N/C)(2.5m)(1)
= -3.40× $10^-^1^6$ J
Any change in the potential energy indicates the work done by the proton.
Therefore the positive sign shows that the potential energy increases when the proton does the work.
The negative sign shows that the potential energy decreases when the proton does the work.