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2 years ago

Which model is most similar to that of Aristarchus?

Physics

2 answers:

alina1380 [7]2 years ago

6 0

Answer:

A. First one with Sun at the center.

Explanation:

Aristarchus was a Greek scientist who proposed the theory that its not Earth which is fixed, its the Sun that has a fixed position and is placed at center where are all other planets are located at some distance from it and revolve around it.

This theory is referred as "Heliocentric". His theories were even attributed by Nicolaus Copernicus and was even know as Copernicus heliocentrism.

Ray Of Light [21]2 years ago

4 0

Answer:The first one , option a

Explanation:

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A 5kg block is pulled across a table by a horizontal force of 40 N with a frictional force of 8 N opposing the motion. Draw a fo

Taya2010 [7]

Answer:

Net force on the block is 32 N.

Acceleration of the object is 6.4 m/s².

Explanation:

Let the acceleration of the object be $a$ m/s².

Given:

Mass of the block is, $m=5\ kg$

Force of pull is, $F=40\ N$

Frictional force on the block is, $f=8\ N$

The free body diagram of the object is shown below.

From the figure, the net force in the forward direction is given as:

$F_{net}=F-f=40-8=32\ N$

Now, from Newton's second law of motion, net force is equal to the product of mass and acceleration. So,

$F_{net}=ma\\32=5a\\a=\frac{32}{5}=6.4\ m/s^2$

Therefore, the acceleration of the object in the forward direction is 6.4 m/s².

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2 years ago

NEED HELP TODAY

Free_Kalibri [48]

Answer:

I am pretty sure it is B My friend hope you are well

Explanation:

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Describe 2 characteristics of the neap tide. *

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Answer:

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José is pinned against the walls of the Rotor, a ride with a radius of 3.00 meters that spins so fast that the floor can be remo

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Answer:

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