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Monica [59]
3 years ago
8

Which statement BEST describes why warm ocean currents are usually surface currents?

Physics
1 answer:
Anuta_ua [19.1K]3 years ago
5 0
I think it is B because it seems like the most valid choice.
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The type of tectonic plate boundary that occurs when two plates are colliding into each other is known as a
ruslelena [56]
The answer is convergent boundary 
6 0
3 years ago
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Define resistance and describe what would happen to a lightbulb if the voltage increase but the resistance stay the same?
artcher [175]

The first question is how much of a voltage increase are we looking at. If it has a 110 voltage rating and you put it across a 220 source, you will see one flash and then the bulb is no more. Nothing will revive it.

If it is rated at 110 and you put 130 across it, there's no problem but the bulb will burn out sooner than it would if you just put 110 across it.

So you raise the voltage and the resistance stays the same, the current will increase. That's why it will burn out sooner.

V = I * R

The equation is a direct variation. If the voltage goes up the current goes up. If the voltage goes down, the current goes down providing that the resistance stays the same in both cases.

The second question is what is resistance? Resistance in Electricity is the ability of an electric current to go in one direction freeing up as many electrons as it can. The MORE free electrons, the lower the resistance. The FEWER free electrons the higher the resistance.

Here' the kicker. Ready? More and Less are probably the two most important words in beginning science.

The <u><em>More</em></u> the resistance, the <em><u>Less</u></em> the current flow. That's a really important consideration in battery drain in a watch (or modern day calculator). The More the Battery Drain, the Less time it will last.

Always be careful when more and Less are around.

7 0
3 years ago
A 69-kg student sitting on a hardwood floor does not slide until pulled by a 260-N horizontal force. find coefficient of frictio
salantis [7]

Answer:

μ = 0.385

Explanation:

Given that,

The mass of the student, m = 69 Kg

The horizontal force applied, F = 260 N

The normal force acting on the body, weight = mg = 69g  N

                                                                                    = 676.2 N

The coefficient of friction acting on a body is equal to the force acting on the body to the normal force acting on the body due to gravitation.

The formula for coefficient of friction,

                                    μ =  F / N

Substituting the values in the above equation,

                                     μ = 260 N / 676.2 N

                                        = 0.385

Hence, the  coefficient of friction, μ = 0.385

6 0
3 years ago
Determine the acceleration of a raptor that reaches 25 m/s from rest in 6.5 s.
REY [17]

Answer:

3.8 m/s²

Explanation:

Average acceleration is the change in velocity over change in time.

a = Δv / Δt

a = (25 m/s − 0 m/s) / 6.5 s

a ≈ 3.8 m/s²

8 0
3 years ago
Two objects are interacting but stay stationary. Which best describes what is happening to he action and reaction forces
weeeeeb [17]

Answer: B

Explanation: The forces are equal and opposite each other.

4 0
3 years ago
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