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Alex777 [14]
3 years ago
7

. Newton's law of gravity describes the gravitational force between __________.

Physics
1 answer:
Svetllana [295]3 years ago
7 0

Answer:

a.All of the listed answers are correct.

Explanation:

Newton's law of universal gravitation states two bodies attract each other with a force directly proportional to the square of their masses and inversely proportional to the square of the distance that separates them, and is directed along the line that joins the bodies. This force is known as the force of gravity or gravitational force and is expressed as:

F=G*\frac{m_1 *m_2}{r^2}

Where:

m_1\hspace{3}and\hspace{3}m_2= Masses\hspace{3}of\hspace{3}the\hspace{3}objects\\G= Gravitational\hspace{3}constant\\r=Distance\hspace{3}between\hspace{3}the\hspace{3}objects

Therefore, the gravitational interaction between two bodies always manifests as a pair of equal forces in direction and magnitude but in the opposite direction.

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A spring with a spring constant of 4 N/m is stretched by Sarah's dog until extended by 2 m. How much elastic potential energy is
azamat

Hi there!

Recall the equation for spring potential energy:

PE = \frac{1}{2}kx^2

k = Spring constant (N/m)

x = extension of spring from equilibrium (m)

PE = Potential Energy (J)

Plug in the given values:

PE = \frac{1}{2}(4)(2^2) = \boxed{8 J}

8 0
3 years ago
This painting represents the milky way galaxy as it might appear from a distance. Identify the indicated features.
aksik [14]

The indicated features of how the painting represents the milky way galaxy include the following:

  • Spiral arm
  • Bulge
  • Disk

<h3>What is Milky way?</h3>

This is the galaxy which comprises of our solar system and has a milky appearance when it's viewed from the earth.

The painting represented it as a result of the spiral arm and other features which are listed above.

Read more about Milky way here brainly.com/question/13956361

5 0
2 years ago
Based on the information in the chart, which of these acids would be the best conductor of electricity?
Novay_Z [31]

Answer:

sulphuric acid

Explanation:

8 0
4 years ago
A 1000 kg car travels on a highway with a speed of 30 m/s. The driver sees a roadblock and applies the brakes, which provide a
Tomtit [17]

Answer:

-4m/s

Explanation:

use the formula

f = ma

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a-accleration

so

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4000=1000×a

a=4m/s

(the negative is because the car was braking)

7 0
4 years ago
A light ray travels in the +x direction and strikes a slanted surface with an angle of 62° between its normal and the ty axis. T
Elena-2011 [213]

Answer:

- 0.6

Explanation:

Given that angle between normal y axis is 62° so angle between  normal

and x axis will be 90- 62 = 28 °. Since incident ray is along x axis , 28 ° will be the angle between incident ray and normal ie it will be angle of incidence

Angle of incidence = 28 °

angle of reflection = 28°

Angle between incident ray and reflected ray = 28 + 28 = 56 °

Angle between x axis and reflected ray = 56 °

x component of reflected ray

= - cos 56 ( it will be towards - ve x axis. )

- 0.6

6 0
3 years ago
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