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2 years ago

types of plate boundaries where two plates separate or move apart?? does anyone know please help ??????

Physics

2 answers:

Blababa [14]2 years ago

8 0

You have convergent and divergent boundaries. The divergent boundaries are what moves apart. Hope this helps! :)

Shtirlitz [24]2 years ago

7 0

Erosion i belive it is called

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A body with initial velocity 8.0 m/s moves along a straight line with constant acceleration and travels

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Answer:

(a) The average velocity is 16 m/s

(b) The acceleration is 0.4 m/s^2

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Explanation:

Constant Acceleration Motion

It's a type of motion in which the velocity (or the speed) of an object changes by an equal amount in every equal period of time.

Being a the constant acceleration, vo the initial speed, vf the final speed, and t the time, final speed is calculated as follows:

$v_f=v_o+at\qquad\qquad [1]$

The distance traveled by the object is given by:

$\displaystyle x=v_o.t+\frac{a.t^2}{2}\qquad\qquad [2]$

(a) The average velocity is defined as the total distance traveled divided by the time taken to travel that distance.

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$\displaystyle \bar v=\frac{x}{t}=\frac{640}{40}=16$

The average velocity is 16 m/s

Using the equation [1] we can solve for a:

$\displaystyle a=\frac{v_f-v_o}{t}$

$\displaystyle a= 2\frac{x-v_ot}{t^2}$

Since vo=8 m/s, x=640 m, t=40 s:

$\displaystyle a= 2\frac{640-8\cdot 40}{40^2}=0.4$

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2 years ago

A 65 N boy sits on a sled weighing 52 N on a horizontal surface. The coefficient of friction between the sled and the snow is 0.

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Answer:

1.40 N

Explanation:

The magnitude of the frictional force is given by:

$F=\mu N$

where

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