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3 years ago

Science, who ever answers this will get a brainlest

Physics

2 answers:

Ganezh [65]3 years ago

8 0

answer:

a.fossils of the same plants and animals are found on widely spread continents

explanation:

four fossil examples include; the mesosaurus, cynognathus, lystrosaurus, and glossopteris.

good luck :)

i hope this helps

have a nice day !!

musickatia [10]3 years ago

7 0

The first one(about the spread fossils).

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Me podrían dar la respuesta y el proceso?

Nat2105 [25]

Answer:

I don’t understand Espanol

Explanation:

sorry

7 0

3 years ago

How does groundwater move through the lithosphere?

Viktor [21]

Aquifer- the layer permeable rock that has connecting pores & transmit water freely, the artesian well water rises to the surface.

Hope this helps!

5 0

3 years ago

Playing near a road construction site, a child falls over a barrier and down onto a dirt slope that is angled downward at 33° to

Debora [2.8K]

Answer:

$\mu_{k} \approx 0.719$

Explanation:

The equations of equilibrium for the child are: (x' in the direction parallel to slope, y' in the direction perpendicular to slope)

$\Sigma F_{x'} = m\cdot g \cdot \sin \theta - \mu_{k}\cdot N = m\cdot a\\\Sigma F_{y'} = N - m\cdot g\cdot \cos \theta = 0$

After some algebraic manipulation, an expression for the coefficient of kinetic friction is obtained:

$m\cdot g\cdot \sin \theta - \mu_{k}\cdot m \cdot g \cos \theta = m \cdot a$

$g \cdot (\sin \theta - \mu_{k}\cdot \cos \theta) = a$

$\mu_{k}\cdot \cos \theta = \sin \theta - \frac{a}{g}$

$\mu_{k} = \frac{1}{\cos \theta}\cdot (\sin \theta - \frac{a}{g} )$

$\mu_{k} = \frac{1}{\cos 33^{\textdegree}}\cdot \left(\sin 33^{\textdegree}-\frac{(-0.57\,\frac{m}{s^{2}}) }{9.807\,\frac{m}{s^{2}} } \right)$

$\mu_{k} \approx 0.719$

5 0

4 years ago

You leave your house at 7:50

igor_vitrenko [27]

Answer:

LOL what?

Explanation:

3 0

3 years ago

Read 2 more answers

How much kinetic energy the truck still has

seropon [69]

Answer:

47.5kJ

Explanation:

Before climbing the cliff

$E_t = E_k$

$E_k=\frac{1}{2} mv^2\\E_k=\frac{1}{2} 500*15^2\\\\E_k = 56250J\\$

At 2.

$E_t = E_k+E_p$

8 0

3 years ago