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denis-greek [22]

3 years ago

8

The Gaia hypothesis is an example of _____

1 answer:

Fofino [41]3 years ago

4 0

A complex entity involving the Earth's biosphere, atmosphere, oceans, and soil; the totality constituting a feedback or cybernetic system which seeks an optimal physical and chemical environment for life on this planet

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A spring hangs from the ceiling with an unstretched length of x 0 = 0.69 m x0=0.69 m . A m 1 = 7.5 kg m1=7.5 kg block is hung fr

sergejj [24]

Answer:

x2=0.732m

Explanation:

We can calculate the spring constant using the equilibrium equation of the block m1. Since the spring is in equilibrium, we can say that the acceleration of the block is equal to zero. So, its equilibrium equation is:

$m_1g-k\Delta x_1=0\\\\\implies k=\frac{m_1g}{\Delta x_1}\\\\k=\frac{(7.5kg)(9.8m/s^{2})}{0.84m-0.69m}=490N/m$

Then using the equilibrium equation of the block m2, we have:

$m_2g-k\Delta x_2=0\\\\\\implies x_2=x_0+\frac{m_2g}{k} \\x_2=0.69m+\frac{(2.1kg)(9.8m/s^{2})}{490N/m}= 0.732m$

In words, the lenght x2 of the spring when the m2 block is hung from it, is 0.732m.

6 0

3 years ago

A large ball of gas that is held together by gravity and that has a core so hot that

valentina_108 [34]

The answer is a star

4 0

2 years ago

a baby carriage is sitting at the top of a hill that is 21m high. The carriage with the baby weighs 12kg. The carriage has _____

Ket [755]

Height=h=21m
Mass=m=12kg

$\\ \rm\longmapsto P.E=mgh$

$\\ \rm\longmapsto P.E=12(10)(21)$

$\\ \rm\longmapsto P.E=120(21)$

$\\ \rm\longmapsto P.E=2520J$

8 0

3 years ago

Write the untis of following physical quantities electric current , force, frequency, density

Shtirlitz [24]

Answer:

1) electric current - ampere

2) force - joule

3 frequency - hertz

4) density - kilogram per cubic metre

pls follow me friends ..

4 0

3 years ago

Read 2 more answers

Streams of electrically charged particles flowing at high speeds from the sun make up the

pshichka [43]

That's the so-called 'solar wind'.

5 0

3 years ago