College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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1. The radius of the Earth is 6.4 - 10⁰ m, mass of the Earth is 6.0 x 10²4 kg, and distance of the Earth from
the sun is 1.5.10¹1 m.
(a) Calculate the angular velocity of the Earth's rotation.
Enter to 2 significant figures
W rot
(b) Calculate the moment of inertia assuming that Earth is a sphere. What formula will you use?
Enter to 2 significant figures
I sphere
ΚΕ
=
ω
(c) Calculate the rotational kinetic energy of Earth on its axis.
Enter to 2 significant figures
rot
rev
=
✔rad/s
=
=
✔kg m²
(d) Calculate the angular velocity of the of Earth in its orbit around the Sun.
Enter to 2 significant figures
✓
✔rad/s
(e) Calculate the moment of inertia of Earth in its orbit around the Sun assuming that Earth is a point
mass compared to the sun. What formula will you use?
Enter to 2 significant figures
orbit =
✔kg m²
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Transcribed Image Text:1. The radius of the Earth is 6.4 - 10⁰ m, mass of the Earth is 6.0 x 10²4 kg, and distance of the Earth from the sun is 1.5.10¹1 m. (a) Calculate the angular velocity of the Earth's rotation. Enter to 2 significant figures W rot (b) Calculate the moment of inertia assuming that Earth is a sphere. What formula will you use? Enter to 2 significant figures I sphere ΚΕ = ω (c) Calculate the rotational kinetic energy of Earth on its axis. Enter to 2 significant figures rot rev = ✔rad/s = = ✔kg m² (d) Calculate the angular velocity of the of Earth in its orbit around the Sun. Enter to 2 significant figures ✓ ✔rad/s (e) Calculate the moment of inertia of Earth in its orbit around the Sun assuming that Earth is a point mass compared to the sun. What formula will you use? Enter to 2 significant figures orbit = ✔kg m²
(f) Calculate the rotational kinetic energy of the Earth in its orbit around the Sun.
Enter to 2 significant figures
KE =
rev
✓
expand button
Transcribed Image Text:(f) Calculate the rotational kinetic energy of the Earth in its orbit around the Sun. Enter to 2 significant figures KE = rev ✓
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