Question

What is the total kinetic energy of the Earth due to its rotation around the sun and it’s spin about its own axis?

Answer #1

Calculate the kinetic energy that the earth has because of (a)
its rotation about its own axis and (b) its motion around the sun.
Assume that the earth is a uniform sphere and that its path around
the sun is circular. For comparison, the total energy used in the
United States in one year is about 1.1 x 1020 J.

Calculate the kinetic energy that the earth
(ME = 5.98× 1024 kg) has
because of (a) its rotation about its own axis
(RE = 6.38× 106 m) and (b)
its motion around the sun (Ro = 1.50×
1011 m). Assume that the earth is a uniform sphere and
that its path around the sun is circular. For comparison, the total
energy used in the United States in one year (365.25 days) is about
9.3× 1019J. Answer to 3 significant figures.

Calculate the KE that the earth has because of a) it's rotation
about its own axis and b) its morion around the sun. Assume that
the earth is a uniform sphere and that its path around the sun is
circular. for comparison, the total energy used in the US in one
year is about 1.1 x 10^20 J.

For the purposes of this problem, treat the Earth as a solid,
uniform sphere with mass 5.97×1024 kg and radius
6.37×106 m, and assume that the Earth's orbit around the
sun is circular with a radius of 1.5×1011
m.
(A) What is the angular kinetic energy of the Earth due to its
orbit around the sun?
(B) What is the magnitude of the Earth's angular momentum due to
its orbit around the sun?
(C) What is Earth's angular kinetic energy...

The Earth-Sun system contains gravitational and kinetic energy.
Discuss what happens to this energy as the Earth goes around the
Sun: Is one type of energy continually decreasing or increasing? Is
this energy being transformed into thermal energy? Is this energy
being replenished constantly somehow?

The planet Earth orbits around the Sun and also spins around its
own axis.
A) Calculate the angular momentum of the Earth in its
orbit around the Sun in kg • m2/s
B) Calculate the angular momentum of the Earth spining on its
axis in kg•m2/s
C) How many times larger is the angular momentum of the Earth in
its orbit than the angular momentum of the Earth around its
axis?

(a) Calculate the rotational kinetic energy (in J) of Mercury on
its axis. (Assume its mass to be 3.59 ✕
1023 kg, the period about its axis to be 1420 h, and its
diameter to be 4880 km.)
_____ J
(b) What is the rotational kinetic energy (in J) of Mercury in
its orbit around the Sun? (Assume its distance from the sun to be
5.79 ✕ 107 km and its period about the
sun to be 88.0 days.)
____...

The Earth can be approximated as a sphere of uniform density,
rotating on its axis once a day. The mass of the Earth is
5.97×1024 kg , the radius of the Earth is
6.38×106 m , and the period of rotation for the Earth is
24.0 hrs .
What is the rotational kinetic energy of the
Earth?Express your answer in joules to three significant
figures
A)Where did the rotational kinetic energy of the Earth come
from?
.
B)Select the option...

A comet moves about the Sun in an elliptical orbit, with its
closest approach to the Sun being about 0.410 AU and its greatest
distance from the sun being 45.0 AU (1 AU = the Earth-Sun
distance).
(a) Which of the comet's properties are conserved as the comet goes
around the Sun? Select all that apply.
angular momentum
potential energy
kinetic energy
linear momentum
total energy
(b) If the comet's speed at closest approach is 54.0 km/s, what is
its...

Suppose a rock is falling toward Earth. What is happening to its
total energy (kinetic + gravitational)? Neglect the effects of air
resistance.
1- there is not enough information to tell
2- it remains constant
3- it increases
4- it decrease

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