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3 years ago

Which statement describes why ocean currents are considered convection currents?

Physics

2 answers:

Nataly_w [17]3 years ago

7 0

I think its B B)Warm water rises and cold water moves in to replace it.

hichkok12 [17]3 years ago

4 0

Answer: The correct answer is Option B.

Explanation:

Convection process is one of the mode of heat transfer. In this process heat transfer takes place when there is a movement of fluid (liquid or gas).

Convection occurs in ocean currents due to the heat up of oceanic waters making it less dense. This water travel above the cooler water and thus give off its heat to the environment surrounding it. As the water cools, it then starts to sink, and the process continues.

Convection results due to the continual circulation of ocean water. In simpler terms, warm water rises up and cold water moves in to replace it.

Hence, the correct option is B.

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What determines whether or not work is being done

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In order for work to be done a force must be transferred and the object must move.

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3 years ago

Form of energy that exhibits wavelength behavior as it travels through space. Example: Mircrowave rays, U.V. rays.

serious [3.7K]

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3 years ago

During the filming of a certain movie scene, the director wants a small car (mass 795 kg) traveling due east at 35.0 m/s to coll

frosja888 [35]

Answer:

The trucker should drive at a speed of 11 m/s m/s

Explanation:

mass of the small car, m₁ = 795 kg

initial velocity of the small car, u₁ = 35 m/s(due east)

Mass of the truck, m₂ = 3360 kg

Initial velocity of the truck, u₂ = ?

Final velocity, V = u₁ sin37 ( the line between the camera and the collision makes an angle 37° with respect to the north)

According to the law of momentum conservation:

For the x -component

m₁u₁ = (m₁ + m₂)Vsinθ

m₁u₁ = (m₁ + m₂)Vsin37

(795*35) = (795 + 3360)* Vsin37

27825 = 2500.54V

V = 27825/2500.54

V = 11.13 m/s

For the y - component

m₂u₂ = (m₁ + m₂)Vcos37

3360*u₂ = (795+3360)*11.13*cos37

3360*u₂ =36933.02

u₂ = 36933.02/3360

u₂ = 11 m/s

7 0

3 years ago

A net force of 100 N is moving a mass with an acceleration of 5 m/s. What is the mass of the object

RSB [31]

The mass is 20 grams.
More mass means the acceleration would be less but with the mass being 20 the acceleration would be more than

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3 years ago

A scientist conducted research and plotted his results in the histogram shown below. Which of the

ludmilkaskok [199]

Answer:

Median

Explanation:

we commonly use mean as the measure of the center of the data.
But Median is better measure than mean.

Extra information:-

Median formula:-

$\boxed{\begin{minipage}{6cm}$\bigstar$\:\:\sf Median = l + $\sf\dfrac{\frac{n}{2}-C.f.}{f}\times h\\\\Here: \\1)\:n = \sum f =\\2)\:l=Lower\:limit\:of\:median\:class=\\3)\:C.f.=Cumulative\:frequency\:of\:class\\preceeding\:the\:median\:class=\\4)\:f= frequency\:of\:median\:class=\\5)\:h= Class\:interval = \end{minipage}}$

6 0

3 years ago