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
dalvyx [7]
3 years ago
14

6. A satellite is orbiting Earth just above its surface. The centripetal force making the satellite follow a circular trajectory

is just its weight, so its centripetal acceleration is about 9.8 m/s2 (the acceleration due to gravity near Earth’s surface). If Earth’s radius is about 6375 km, how fast must the satellite be moving? How long will it take for the satellite to complete one trip around Earth?
Physics
1 answer:
Svetllana [295]3 years ago
5 0

Answer:

Engular velocity: w=1,24*10^{-3}/s

Linear velocity: V=7905 m/s

The time it takes:

t=5060s=84min

Explanation:

The magnitude of the centripetal acceleration can be related to the angular velocity and radius as:

(1)a=r*w^{2}

Solving for w:

(2)w=\sqrt{\frac{a}{r} }

Replacing a=9,8m/s2 and r=6,375,000m:

(3)w=\sqrt{\frac{9,8m/s^{2}}{6375000m} }=1,24*10^{-3}/s

And the angular velocity relates to the linear velocity:

V=w*r=1,24*10^{-3}/s*6375000m=7905 m/s

The perimeter of the orbit is:

P=\pi *2*r=\pi *2*6375000m=40.05*10^{6}m

The time it takes:

t=\frac{P}{V} =\frac{40.05*10^{6}m}{7905 m/s}=5060s=84min

You might be interested in
How are energy and distance up the ramp related
AfilCa [17]
I don't exactly understand the question but I'll try my best to answer it and help you. You need energy in order to go up the ramp and cover the distance. I hope this helps! :)
8 0
3 years ago
A student walks to the right 25-m along the 800 hall in 15-s. They turn around and walk 15-m to the left in 8.0-s. Calculate the
Ludmilka [50]

Answer:

Explanation:

Total distance covered  = 25 + 15 = 40 m

Total time = 15 + 8 = 23 s

Average speed = total distance covered / total time

= 40 / 23

= 1.74 m / s

Total displacement = 25 - 15 = 10 m

Total time = 15 + 8 = 23 s

Average velocity = total displacement / total time

= 10 / 23

= .434 m / s to the right .

3 0
3 years ago
What are some of the physical benefits to be derived from aerobic
VladimirAG [237]
Some of the benefits are increased heart muscles, increase in blood flow, and reduced body fat
6 0
3 years ago
An emf is induced in response to a change in magnetic field inside a loop of wire. Which of the following changes would increase
goldenfox [79]

Answer:

changing the magnetic field more rapidly

Explanation:

According to Faraday's law, whenever there is a change in the magnetic lines of force, it leads the production of induced emf. The magnitude of induced emf is proportional to to the rate of change of flux.

Hence if the magnetic field inside a loop of wire is changed rapidly, the magnitude of induced emf increases in accordance with Faraday's law of electromagnetic induction stated above when the magnetic field is changed more rapidly, hence the answer.

8 0
3 years ago
A _____ is a quantity that has magnitude and direction
Snezhnost [94]

vector is the answer of this blank

7 0
3 years ago
Other questions:
  • Which planet revolves around the sun in less time than in rotates around its axis?
    13·2 answers
  • Humans and animals alike have critical periods of development.true false
    9·2 answers
  • HELP ASAP! GIVING BRAINLIEST
    10·2 answers
  • The SI unit of force is the
    5·1 answer
  • Calculate how much work is done if a current of 2A flows through a potential difference of 12V for 2 minutes
    14·1 answer
  • Describe how fallacies can be created and spread
    12·1 answer
  • The environment between the outer and inner nuclear membranes is most accurately referred to as the:
    11·1 answer
  • The particles of a GAS within a closed container will collide with the container walls, exerting a FORCE. The force per unit of
    5·2 answers
  • what must be the distance between source of sound and mountain to give an echo in 5 seconds ? ,(speed of sound at 0°c=33m\sec​
    11·1 answer
  • PLS HELP!! IN QUIZ RN!
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!