2 years ago

What are some ways that humans depend on the ocean?

Physics

2 answers:

solmaris [256]2 years ago

6 0

Answer:

fishing
swimming/entertainment
the algae that gives us oxygen
water! It evaporates and gives us rain
research

Explanation:

yulyashka [42]2 years ago

5 0

Answer:

A lot of the earth oxygen comes from the ocean around 50%-80%

Explanation:

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Why are satellites placed into orbit at least 150 km above Earth’s surface?

hodyreva [135]

Satellites are placed into orbit at least 150 km above Earth's surface to be above the atmosphere.

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2 years ago

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How much potential energy foes a 5kg mass have when its 2 meters above the ground?(Hint :PE=m*g*h)

frez [133]

Answer:

Explanation:

The potential energy of a body can be found by using the formula

PE = mgh

where

m is the mass

h is the height

g is the acceleration due to gravity which is 9.8 m/s²

From the question we have

PE = 5 × 9.8 × 2

We have the final answer as

Hope this helps you

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2 years ago

At the point of fission, a nucleus of ^235 U that has 92 protons is divided into two smaller spheres, each of which has 46 proto

IrinaK [193]

Answer : $F = 3.5\times10^{3}\ N$

Explanation :

Given that

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The distance between the centers of the two spheres is

$r = 2\times 5.90\times 10^{-15}\ m$

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The magnitude of the repulsive force between the charges pushing them a part is

Using coulomb law

$F = \dfrac {kq_{1}q_{2}}{r^{2}}$

$F = \dfrac{9\times10^{9}\times (46\times1.6\times10^{-19})^{2}C^{2}}{2\times(5.90\times10^{-15})^{2}\ m^{2}}$

$F = 3501.3\ N$

$F = 3.5\times10^{3}\ N$

Hence, this is the required solution.

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2 years ago

5. A sled with no initial velocity accelerates at a rate of 5.0 m/s2 down a hill. How

ad-work [718]

Answer:

60 m/s

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$5.0 = \frac{vf - 0}{12}$

$5.0 \times 12 = vf$

$60 = vf$

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2 years ago

A speaker vibrates at a frequency of 200 hz. What is it's period ?

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200 Hz = 200 cycles per sec

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3 years ago