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
Diano4ka-milaya [45]
2 years ago
9

Sputnik, the first artificial satellite to orbit the Earth, had a mass of 83.6kg and travelled at 7574 m/s. The radius of the ea

rth is 6371 km and its mass is 5.972 x 10^24 kg. What gravitational force did Sputnik apply to the earth during this orbit?
Physics
1 answer:
konstantin123 [22]2 years ago
5 0

Answer:

690.6 N

Explanation:

The gravitational force that the Earth exerts on Sputnik acts as centripetal force to keep the satellite in motion, so we can write

\frac{GMm}{r^2}=m\frac{v^2}{r}

where

G is the gravitational constant

M = 5.972 x 10^24 kg is the Earth's mass

m = 83.6 kg is the satellite's mass

v = 7574 m/s is the satellite's speed

r is the distance of the satellite from the Earth's center

Solving for r, we find

r=\frac{GM}{v^2}=\frac{(6.67\cdot 10^{-11})(5.972\cdot 10^{24})}{(7574)^2}=6.944\cdot 10^6 m

Now we can find the gravitational force exerted by the Earth on Sputnik:

F=\frac{GMm}{r^2}=\frac{(6.67\cdot 10^{-11})(5.972\cdot 10^{24})(83.6)}{(6.944\cdot 10^6)^2}=690.6 N

And according to Newton 3rd law (action-reaction, the force exerted by Sputnik on the Earth is equal to the force exerted by the Earth on Sputnik, so this is the value of the force we are requested to find.

You might be interested in
An oil film with refractive index 1.48 and thickness 290 nm is floating on water and illuminated with white light at normal inci
VikaD [51]

Answer:

572.3 nm

Explanation:

n_{oil} = refractive index of the oil film = 1.48

t_{oil} = thickness of the oil film = 290 nm

\lambda = wavelength of the dominant color

m = order

Using the equation

2 n_{oil} t_{oil} = (m + 0.5) \lambda

For m = 0

2 (1.48) (290) = (0 + 0.5) \lambda

\lambda = 1716.8 nm

For m = 1

2 (1.48) (290) = (1 + 0.5) \lambda

\lambda = 572.3 nm

For m = 2

2 (1.48) (290) = (2 + 0.5) \lambda

\lambda = 343.4 nm

Hence the dominant color wavelength is 572.3 nm

8 0
3 years ago
A student has a small piece of steel.
Simora [160]

Answer:

There are different ways to investigate density. In this required practical activity, it is important to:

record the mass accurately

measure and observe the mass and the volume of the different objects

use appropriate apparatus and methods to measure volume and mass and use that to investigate density

Explanation:

5 0
2 years ago
The efficiency of an average gasoline-powered car is about 20%. This means
nydimaria [60]

Answer:

This means C.the car uses 20% of the energy store in the gasoline for motion.

Explanation:

I hope this helps.

4 0
2 years ago
Read 2 more answers
A plane lands on a runway with a speed of 115 m/s, moving east, and it slows to a stop in 13.0 s. What is the magnitude (in m/s2
marin [14]

Answer:

<em> The planes average acceleration in magnitude and direction = 8.846 m/s² moving east</em>

Explanation:

Acceleration: This can be defined as the rate of change of velocity. The S.I Unit of acceleration is m/s². Acceleration is a vector quantity because it can be represented both in magnitude and in direction.

Acceleration can be represented mathematically as

a = v/t.................................... Equation 1

Where a = acceleration, v = velocity, t= time.

<em>Given: v = 115 m/s, t = 13.0 s</em>

<em>Substituting these values into equation 1</em>

<em>a = 115/13</em>

<em>a = 8.846 m/s² moving east</em>

<em>Thus the planes average acceleration in magnitude and direction = 8.846 m/s² moving east</em>

4 0
2 years ago
What occurs when the moon blocks the view of the sun
Sever21 [200]

Answer:

solar eclipse

Explanation:

because at that time, the moon completely covers the path and casts its shadow on earth because it is present between sun and earth's path. so, solar eclipse occurs.

hope it helps :)

8 0
3 years ago
Other questions:
  • If Joe rides his bicycle in a straight line for 15 min with an average velocity of 12.5 km/h south, how far has he ridden?.
    9·2 answers
  • A 55 newton force applied on an object moves the object 10 meters in the same direction as the force. What is the value of work
    8·2 answers
  • Changing the camber of a wing by designing positive curvature in or lowering trailing edge flaps allows:______.
    15·1 answer
  • What is the chemical formula for potassium carbonate, which is formed from
    11·1 answer
  • What are the advantages of parallel circuits? Check all that apply
    11·2 answers
  • A baseball is hit high and far. Which of the following statements is true? At the highest point,
    6·1 answer
  • A bicyclist accelerates from a stop to a speed of 12m/s in 3 seconds.what is her acceleration
    5·1 answer
  • A person pushes a box across the floor the energy from the person moving arm is transferred to the box in the box in the floor b
    12·1 answer
  • How many electron flow through a light bulb each second if the current flow through the light bulb 0.75A.The electric charge of
    12·1 answer
  • Sublimation is used to describe
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!