1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
enot [183]
3 years ago
8

The mass of the moon is 7.36×1022kg and its distance to the Earth is 3.84×108m. What is the gravitational force of the moon on t

he earth?
Physics
1 answer:
marissa [1.9K]3 years ago
8 0

Answer:

The gravitational force is F =  2\,*\,10^{20}\,N

Explanation:

To answer this question we need to recall Newton's Universal Law of Gravitation for the force "F" exerted from one object to the other:

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

where G is the Universal gravitational constant = 6.674\,* \,10^{-11}\,\,\frac{m^3}{kg\,s^2}

m_1, and m_2 are the masses of the two bodies/objects attracting each other via gravitational force. In our case, one is the mass of the Earth = 5.972\,*\,10^{24}\, kg

and the other one,the mass of the Moon = 7.36\,*\,10^{22}\,kg

and lastly, "d" is the distance between to two objects. In our case:

d =3.84\,*\,10^8\,m

Since all these quantities are given in SI units, when we use them in the formula, our answer will result in the SI units of force "N" (Newtons):

F=6.674\,*10^{-11}\,\frac{5.972\,10^{24}\,7.36\,10^{22}}{(3.84\,10^8)^2} \,N\\F=1.989\,*\,10^{20}\,N\\

which can be rounded to: F = 2\,*\,10^{20}\,N

You might be interested in
Two converging lenses are placed 30 cm apart. The focal length of the lens on the right is 20 cm while the focal length of the l
Masja [62]

Answer:

a)   I2 = 3 (o-10) / (o- 30) , b)   h ’/h=  3 (o-10) / o (o-30)

Explanation:

The builder's equation is

          1 / f = 1 / o + 1 / i

Where f is the focal length, or e i are the distance to the object and image, respectively

As the separation between the lenses is greater than the focal distances, we must work them individually and separately. Let's start with the leftmost lens with focal length f = 15 cm

Let's calculate the position of the image of this lens

         1 / i1 = 1 / f - 1 / o

         1 / i1 = 1/15 - 1 / o

         i1 = o 15 / (o-15)

Let's calculate the distance to the image of the second lens, for this the image of the first is the distance to the object of the second

        o2 = d-i1

We write the builder equation

       1 / f2 = 1 / o2 + 1 / i2

       1 / i2 = 1 / f2 -1 / o2

       1 / i2 = 1 / f2 - 1 / (d-i1)

       1 / i2 = 1/20 - 1 / (d-i1)            (1)

Let's evaluate the last term

      d-i1 = d - 15 o / (o-15)

      d-i1 = (d (o-15) - 15 o) / (o-15)

      d- i1 = (30 or -30 15 -15 o) / (o-15)

      d-i1 = (15 or - 450) / (o- 15)

      d-i1 = = (15 or -450) / (o-15)

replace in 1

      1 / i2 = 1/20 - (or - 15) / (15 or -450)

      1 / i2 = [(15 o-450) - (o-15) 20] / (15 or -150)

      1 / i2 = (15 or - 450 - 20 or + 300) / (15 or - 150)

      1 / i2 = (-5 or -150) / (15 or -150)

      1 / i2 = (or -30) / (3 or - 30)

      I2 = 3 (o-10) / (o- 30)

Part B

The height of the image, we use the magnification equation

     m = h ’/ h = - i / o

     h ’= - h i / o

In our case

     h ’= h i2 / o

     h ’= h 3 (o-10) / o (o-30)

If they give the distance to the object it is easier

5 0
3 years ago
What is the logical oreder for these words : verse, interlude,verse,refrain, introduction,refrain,coda,refrain,verse
Nikolay [14]

Sorry to say but I know that t(e introduction is first and the coda is last


3 0
3 years ago
What is the difference between a bar magnet and an electromagnet? (check all that are
lukranit [14]

Answer:

D and A

Explanation:

Hint The basic difference between them is that a bar magnet is a permanent magnet whereas an electromagnet is a temporary magnet. An electromagnet is formed when an electric current is passed through wires wound around soft metalcore. An electromagnet loses its magnetism once the current flow is stopped.

5 0
3 years ago
ELECTROMAGNETIC FIELDS PLAN AN INVESTIGATION LAB REPORT FOR EDG.!!!!! WORTH 100 POINTS????????
tekilochka [14]

Answer:ummm ok

Explanation:I really don’t get it but ok

3 0
2 years ago
Please help soon!!!!
anyanavicka [17]
The Answer: Parallel
6 0
3 years ago
Read 2 more answers
Other questions:
  • A puppy weighing 3 kilograms races through the dog park. if she slows from a speed of 2 meters/second to 1 meter/second, what wi
    10·2 answers
  • A +2.00nc point charge is at the origin, and a second -5.00nc point charge is on the x-axis at x = 0.800m find the magnitude of
    14·1 answer
  • What kind of charge does an object have if it has gained electrons
    11·2 answers
  • Listed following are three possible models for the long-term expansion (and possible contraction) of the universe in the absence
    5·1 answer
  • Health education provides
    8·1 answer
  • Determine the acceleration of the box of mass 140 kg, when a net force of 900 N acts on it.​
    15·1 answer
  • Our solar system is made up of the Sun, 8 planets, and other bodies such as
    14·1 answer
  • According to Lenz's law, an induced current in the direction depicted in the picture would be created when: a. An external downw
    15·1 answer
  • A car is traveling at 60 mph. If the rate of speed increases 4 mph each hour,
    6·2 answers
  • a piston-cylinder apparatus has a 4 kg piston with a diameter of 5 cm resting on a body of water 60 cm high. atmospheric pressur
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!