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
egoroff_w [7]
2 years ago
14

(a) Calculate how much work is required to launch a spacecraft of mass m from the surface of the earth (mass mE, radius RE) and

place it in a circular low earth orbit, that is, an orbit whose altitude above the earth's surface is much less than RE. (As an example, the International Space Station is in low earth orbit at an altitude of about 400km, much less than RE = 6370km .) Ignore the kinetic energy that the spacecraft has on the ground due to the earth’s rotation.
(b) Calculate the minimum amount of additional work required to move the space craft from low earth orbit to a very great distance from the earth. Ignore the gravitational effects of the sun, the moon, and the other planets.
(c) Justify the statement "In terms of energy, low earth orbit is halfway to the edge of the universe.

Physics
1 answer:
notsponge [240]2 years ago
8 0

Answer:

(a) The Work need to   place spacecraft into low orbit isGmm_{E} /2R_{E}

(b) Additional Work need to  place the spacecraft far away from the earth is

Gmm_{E} /2R_{E}.

(c) From part(a) and part(b) we observe the Both quantities are equal.

Explanation:

Explanation is in the following attachments

You might be interested in
When it is 32º Farenheit, what is the temperature in degrees Celsius?
Nastasia [14]

Answer:

The answer is B.

Explanation:

If 212 degrees Fahrenheit is 100 degrees Celsius, then 32 degrees Fahrenheit is 0 degrees Celsius.

7 0
3 years ago
Read 2 more answers
The sun is located in
Fiesta28 [93]
Milky Way Galaxy, same one as you.
7 0
2 years ago
Read 2 more answers
Is this statement true or false concerning squall line thunderstorm development? These often form ahead of the advancing front b
Pavlova-9 [17]

Answer: The following statement is true about squall line thunderstorm development: <em><u>These often form ahead of the advancing front but rarely behind it because lifting of warm, humid air and the generation of a squall line usually occur in the warm sector ahead of an advancing cold front. Behind a cold front, the air motions are usually downward, and the air is cooler and drier.</u></em>

<em>An upper-level wave, accountable for the fabrication of a squall line, extend in front of and backside a cold front, the air backside the front is cold, steady and settling while the air ahead of the front is hot and co-seismic.</em>

3 0
2 years ago
A 6.75 nC charge is located 1.99 m from a 4.46 nC point charge.
sladkih [1.3K]

Explanation:

Given that,

Charge 1, q_1=6.75\ nC=6.75 \times 10^{-9}\ C

Charge 2, q_2=4.46\ nC=4.46\times 10^{-9}\ C

The distance between charges, r = 1.99 m

To find,

The electrostatic force and its nature

Solution,

(a) The electric force between two charges is given by :

F=\dfrac{kq_1q_2}{r^2}

F=\dfrac{9\times 10^9\times 6.75\times 10^{-9}\times 4.46\times 10^{-9}}{(1.99)^2}

F=6.84\times 10^{-8}\ N

(b) As the magnitude of both charges is positive, then the force between charges will be repulsive.

Therefore, this is the required solution.

5 0
3 years ago
Which element is the primary fuel used to generate electricity using nuclear energy?
kondor19780726 [428]
I think it might be uranium

hope this helps.
<span />
8 0
3 years ago
Other questions:
  • List 3 examples in which friction helps us or makes things easier in our daily life. Explain the effect of friction for each.
    14·2 answers
  • Tara's cell phone plan costs $39.00 a month, which includes 100 text messages. After she uses all of her text messages, it will
    11·1 answer
  • What does energy give an object the ability to do
    6·1 answer
  • A metallic laboratory spring is typically 5.00 cm long and 0.150 cm in diameter and has 50 coils.
    15·1 answer
  • There are two pendulums with periods 1.5 s and 1 s, which one is longer, and which one is shorter.
    8·1 answer
  • A flat surface is in a uniform magnetic field. Given only the area of the surface and the magnetic flux through the surface, it
    10·1 answer
  • (PLEASE HELP) Which of the following is the name for two or more types of atoms that are chemically bonded together?
    9·2 answers
  • A certain microwave has a
    10·1 answer
  • Como se da la transferencia de energia entre los objetos?
    8·1 answer
  • A 0.45kg baseball is pitched towards home plate at 20 m/s. The ball is hit back towards the pitcher with a speed of 30 m/s. What
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!