The Moon was once closer to Earth but the force of gravity got weaker as the

# The moon was once closer to earth but the force of

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The Moon was once closer to Earth, but the force of gravity got weaker as the Moon moved farther away. The law of conservation of angular momentum ensured that the Moon must have the same amount of rotational angular momentum as it has of orbital angular momentum.
2/10/2021 Homework #3 - Chapters 4 and 5 14/29 In which of the scenarios below would you feel weightless ? ANSWER: Correct Chapter 4, #23 Part A The net force applied to an object equals its ________ (Newton's 2nd Law of Motion). ANSWER: Correct Chapter 4, #24 Part A Radiative energy is ________. ANSWER: Correct Chapter 4, #25 Part A What does E represent in Einstein's formula E = mc 2 ? ANSWER: while parachuting from an airplane while walking on the Moon while accelerating downward in an elevator while falling from a roof mass times velocity mass times acceleration mass times energy momentum times velocity energy from nuclear power plants energy of motion heat energy energy carried by light
2/10/2021 Homework #3 - Chapters 4 and 5 15/29 Correct Chapter 4, #26 Part A Suppose your mass is 70 kg on Earth. On the Moon what would be your mass? ANSWER: Correct Chapter 4, #27 Part A Consider two objects with masses. According to the universal law of gravitation we studied in class, if you double the masses of both attracting objects, then the gravitational force between them will ANSWER: Correct Chapter 4, #28 Part A the gravitational potential energy of an object held above the ground the kinetic energy of a moving object the electric field produced by a charge the mass-energy, or potential energy stored in an object's mass the radiative energy carried by light 70 kg 12 lb 70 lb 12 kg 50 kg decrease by a factor of 4. decrease by a factor of 2. increase by a factor of 4. increase by a factor of 2. not change at all.
2/10/2021 Homework #3 - Chapters 4 and 5 16/29 If a planet is orbiting a star, which is correct about the gravitational forces and acceleration experienced by the planet and the star? ANSWER: Correct Chapter 4, #29 Part A Which of the following statements best describes why a rocket goes up after being launched? ANSWER: Correct Chapter 4, #30 Part A Why do astronauts on the space shuttle in low Earth orbit feel weightless? ANSWER: Correct Chapter 4, #31 Part A Many comets have highly elliptical orbits around the Sun. Where in its orbit around the Sun is a comet moving the slowest? ANSWER: The acceleration of the planet is much more than the acceleration of the star, but the force on the star is the same but opposite the force on the planet. The acceleration of the planet is much more than the acceleration of the star, and the force on the planet is much more than the force on the star.
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