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
Ulleksa [173]
4 years ago
13

A proposed space elevator would consist of a cable stretching from the earth's surface to a satellite, orbiting far in space, th

at would keep the cable taut. A motorized climber could slowly carry rockets to the top, where they could be launched away from the earth using much less energy.
What would be the escape speed for a craft launched from a space elevator at a height of 56,000 km?
Physics
1 answer:
Valentin [98]4 years ago
0 0

Answer:

The escape speed for the craft is 1.49 m/s.

Explanation:

In this case we need to find the escape speed for a craft launched from a space elevator at a height of 56,000 km. The escape velocity is given by :

v=\sqrt{\dfrac{2GM}{d}}

Here,

G is universal gravitational constant

M is mass of earth

d = r + h, r is radius of Earth

v=\sqrt{\dfrac{2\times 6.67\times 10^{-11}\times 5.972 \times 10^{24}}{(6,371 \times 10^3\times 56000\times 10^3)}}\\\\v=1.49\ m/s

So, the escape speed for the craft is 1.49 m/s.

You might be interested in
If a substance besides water is changed from a gas to a liquid and then to a solid, what happens to the particles?
NARA [144]
The correct answer is they get closer together

Going from gas into a liquid makes the molecules move closer together, which happens again when you turn it into a solid.
3 0
3 years ago
Read 2 more answers
1 .how did the methods of early structuralists and functionalists differ? name a psychologist that took each approach.
MrMuchimi

Answer

Structural psychology was first described by Tichener. He was student of wilhelm Wundt. Wilhelm wundt was the first person who has established psycholoogical laboratory. In this laboratory structuralist approach of  psychology was used. Structuralism is supposed to be first formal theory in psychology. Structuralism  separated psychology from biology and philosophy into its own discipline.structuralist method suggested that psychology is purely theoretical.

William James was a scientist who has established a laboratory in which Functionalism approach is used. Functionalism was not accepted in America. Functionalism was a reaction to structuralism. William James was not satisfied with structuralism and then he proposed Functionalist method. William James  suggested that psychology should be practical instead of theoretical as was proposed in the structuralist method. He also suggested that the existence of  consciousness and mind has a particular purpose, which should be the focus of the study.


8 0
3 years ago
A cardboard box has four forces acting upon it, as shown in the diagram below. What is the magnitude of the unknown force, Funkn
AlekseyPX

Answer:

D)  11 N

Explanation:

F = mg

In the vertical

30 = m(9.8)

m = 3.06 kg

in the horizontal

F = ma

F(unknown) - 5 = 3.06(2.0)

F(unknown) = 11.12... N

5 0
3 years ago
Which device increases or decreases voltage as electricity is transmitted from power plants to homes and businesses?
Leona [35]

Answer:Transformer

Explanation:All the other devices generate their own electricity apart from power line and Transformer, power line just carries electricity. A transformer can be used to step up or step down voltages from a source.

4 0
3 years ago
Read 2 more answers
Find the temperature
mote1985 [20]

Where is the Temperature bud?

5 0
3 years ago
Read 2 more answers
Other questions:
  • A well is pumped at Q = 300 m3 /hr in a confined aquifer. The aquifer transmissivity is 25 m2 /hr and the storage coefficient is
    14·1 answer
  • A mass weighing 11 lb stretches a spring 4in. The mass is pulled down an additional 3 in and is then set in motion with an initi
    8·1 answer
  • How are sound waves reflected, transmitted, or absorbed by materials?​
    13·1 answer
  • Dr. Morgan is late for work. He enters the on-ramp to the Merritt Parkway at 15 m/s and
    11·1 answer
  • Which conclusion is best supported by the information in the chart?
    8·2 answers
  • A 343 kg box is pulled 9.00 m up a 30° frictionless, inclined plane by an external force of 5125 N that acts parallel to the pla
    10·1 answer
  • A soft drink manufacturer claims that a new diet drink is "low Joule." The label indicates the available energy per serving is 6
    7·1 answer
  • Sound travels at a speed of 330 meters/second. If Denise hears a police siren 150 meters away, approximately how long did it tak
    11·1 answer
  • What process provides the sun with its energy
    14·2 answers
  • Go to the Previous QuestionGo to the Next Question
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!