Explain how water circulates from deep oceans to the surface.

1 answer:

4 0

"These deep-ocean currents are driven by differences in the water's density, which is controlled by temperature (thermo) and salinity (haline). This process is known as thermohaline circulation. In the Earth's polar regions ocean watergets very cold, forming sea ice." this is what I found...

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Nick raises a 4-kg mass vertically 0.05 meters above his head. Determine the work done on the mass.

Misha Larkins [42]

The work done by Nick as he raises the given mass over the given distance is approximately 2 Joules.

Given the data in the question:

Mass raised; $m = 4kg$

Distance covered; $d = 0.05m$

Work done; $W = \ ?$

First we calculate the force used to raise the mass to the given distance.

Since the movement was vertical, the force must over come the mass and the pull of gravity ( $g = 9.8m/s^2$ ).

Using Newton's second law of Motion;

$F = m * g$

We substitute our values into the equation

$F = 4kg * 9.8m/s^2\\\\F = 39.2 kgm/s^2$

Now, we determine the work done by Nick.

Work done is simply the energy transferred from one store to another.

It is expressed as;

$Work\ done = force * distance\\\\W = F * d$

So we substitute our values into the equation

$W = 39.2kgm/s^2 * 0.05m\\\\W = 1.96kgm^2/s^2\\\\W = 2 J$

Therefore, the work done by Nick as he raises the given mass over the given distance is approximately 2 Joules.

Learn more about Newton's law of motion: brainly.com/question/20066791

8 0

3 years ago

PLEASE HELP

Papessa [141]

Y = v0t + 1/2gt^2.
v0 is 0 as it is at rest initially. So now we have y=1/2gt^2 so 60=1/2(9.8)t^2 and we must solve for t. t= about 3.5 seconds. Since the acceleration is 9.8 m/s^2 we do 9.8 m/s^2 times 3.5 seconds to get 34.3 m/s.

6 0

3 years ago

True or false? Electrons can move, but positive charges can't.True or false? Electrons can move, but positive charges can't.

shepuryov [24]

Answer:

true

Explanatio

7 0

3 years ago

Metals are good thermal conductors – that is, when there is a temperature difference across their ends, they transfer

notsponge [240]

You would expect a thermal conductor to have low specific heat capacity, so it can hold more heat at a given time and transfer it.