Question

need help

Answer 1

A satellite 1000.0 kg has a circular orbit that is at an altitude of 5 earth radii.
1. Calculate the orbital velocity of the satellite in its orbit.
2. Calculate the total energy of the satellite in its orbit.
3. Is the satellite bound to Earth? Explain
4. How much work is done by gravity on the satellite as it moves around Earth? Justify.
5. Using conservation of energy, how fast would be the satellite be if were to descend to an altitude of 2 Earth radii?
6. What is the orbital required of a satellite at an altitude of 2 Earth radii? If it is different from 5, how can you explain the difference between the answer 5 and 6?
7. If the satellite needs to be raised to an orbit of 10 Earth radii, how much energy needs to be supplied to the satellite if losses to thermal energy amount to 30.% of kinetic energy?

Answer 2

@jigglypuff314

Answer 3

@SolomonZelman

Answer 4

1. v orb = sqrt GM/r = sqrt 6.67x10^-11x5.98x10^24/ 5x6.38X10^6 = 3.54x 10^3 m/s

Answer 5

2. delta Et = 1/2 delta EG = m(g)delta h/ 2 = 10000x |9.81| x 4x6.35x10^5 = 1.25x10^11

Answer 6

Satellite has 2 equal n oposit forces

Answer 7

Orbiting satellite's centrifugal force=mv^2/r

Answer 8

Centripetal force=GMm/r^2

Answer 9

G=gravitational constant
M=mass of earth
m=mass of satellite

Answer 10

In equilibrium
mv^2/r=GMm/r^2
Right?

Answer 11

So
v^2=GM/r

Answer 12

v=Sqrt(GM/r)

Answer 13

r=distance frm the centre of earth to the satellite

Answer 14

r=altitude+radius of earth

Answer 15

oh ok

Answer 16

Altitude = 5R
Radius of earth =R

Answer 17

r=?

Answer 18

radius of earth is 6,371 km

Answer 19

Altitude = 5R

Answer 20

r=5R+R=6R=6*6371km
Right?

Answer 21

wait which part are you doing

Answer 22

v=?

Answer 23

First 1

Answer 24

oh so I did it wrong

Answer 25

I think so

Answer 26

U used
r=5R
In ur equation

Answer 27

yeah

Answer 28

so the r be r=5R+R=6R=6*6371km

Answer 29

are you sure na?

Answer 30

As i know
r will b the distance frm the centre of earth to the satellite
Right?

Answer 31

So
r=?

Answer 32

r=altitude+radius of earth

Answer 33

Altitude = 5R, radius of earth = 6.38X10^6

Answer 34

right?

Answer 35

Radius of earth=R=6.38*10^6m

Answer 36

Anyway altitude means the distance frm the surface of earth to the satellite.
Right?

Answer 37

are you sure we don't have to use the Altitude

Answer 38

Altitude is like a hight

Answer 39

the height of an object or point in relation to sea level or ground level.

Answer 40

i believe the r = h+ radius of earth

Answer 41

Yes u r right !

Answer 42

Given
Height=5R
Radius of earth=R
r=5R+R=6R

Answer 43

so that's mean i did it right?

Answer 44

No u were wrong!

Answer 45

U used
r=5R

Answer 46

i use 5 because the altitude is 5

Answer 47

radius of earth is a different number which is 6.38X10^6

Answer 48

@Zale101 @AlexandervonHumboldt2 @bababababananaxo @Curry @Daniellelovee @EmogirlAtEmoooocow @They_Call_Me_Narii @FortyTheRapper @Hayhayz @izzyrawrz @bababababananaxo @Agl202 @CountryBoy15 @mayankdevnani

Answer 49

Need to draw it