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3 years ago

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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Question 9

Zepler [3.9K]

Answer

Can the wave travel between the Sun and Earth.

Explanation:

This would be due to the fact that mechanical waves alone require a medium to travel. Electromagnetic waves that are produced on the sun subsequently travel to Earth through the vacuum of outer space. ... Mechanical waves require a medium in order to transport their energy from one location to another.

7 0

3 years ago

An intergalactic rock star bangs his drum every 1.50 s. A person on earth measures that the time between beats is 2.70 s. How fa

sineoko [7]

Answer:

v = 83.1 % of speed of light

Explanation:

given,

T_e is the earth time = 2.7 s

T_s is the ship time = 1.5 s

we know,

$T_s = T_e \times \gamma$

where c is the speed of light

v is the speed of the rock star moving

$T_s = T_e\times \sqrt{1-\dfrac{v^2}{c^2}}$

$1.5= 2.7\times \sqrt{1-\dfrac{v^2}{c^2}}$

$\sqrt{1-\dfrac{v^2}{c^2}} =0.556$

squaring both side

$1-\dfrac{v^2}{c^2}=0.3086$

$v^2=0.6914c^2$

v = 0.831 c

v = 83.1 % of speed of light

7 0

3 years ago

According to the pressure-flow hypothesis, why must sieve-tube elements in phloem be living cells?

Zigmanuir [339]

Base from the pressure-flow hypothesis, the sieve tube in the phloem should be living cells because sugars are transported across the membranes by the active transport which needs ATP that is produced during respiration. Hope this helps.

3 0

3 years ago

A point charge Q at the center of a sphere of radius R produces an electric flux of Î¦ coming out of the sphere. If the charge r

Dafna1 [17]

Remains the same

Explanation:

According to Gauss's law, the electric flux through a closed surface is proportional to the charge enclosed by the surface. So no matter how big or small we make the surface that encloses the charge, the electric flux remains the same because it only depends on the enclosed charge, not surface area.

3 0

2 years ago

In the lab you place a beaker that is half full of water (density pw ) on a scale. You now use a light string to suspend a piece

Radda [10]

Answer:

N2- N1 = $\rho_{w}$ V g

Explanation:

Let's use for this exercised the equilibrium relationship

∑ F = 0

N -W = 0

N = W = mg

Let's use density redefinition

ρ = m / v

m = ρ V

N₁ = (ρ V) g

Repeat for when the liquid is submerged, in this case an upward thrust appears as a result of the water dispensed (rgow)

N₂ + B - W = 0

N₂ = W - B

B = $m_{water}$ g

$\rho_{w}$ = m / V

$m_{w}$ = $\rho_{w}$ V

N = ρ V g - $\rho_{w}$ Vg

N2 = N1 + $\rho_{w}$ V g

N2- N1 = $\rho_{w}$ V g

6 0

3 years ago