If Earth somehow expanded to a larger radius, with no change in mass, how would your weight be affected? How would it be affected if Earth instead shrunk? (Hint: Let the equation for gravitational force guide your thinking.)

Q: If you dropped a ball while standing on the surface of Mars, at what rate would it accelerate toward…

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Q: What is the gravitational force between a 5.2-kg table and a 2.4-kg chair separated by a distance of…

A: Given that: Mass of table                            m1 = 5.2 kg Mass of chair…

Q: Is mass more dependent than weight on its location relative to earth?

A: Mass of an object is a constant. It is a measure of amount of matter contained in the object. The…

Q: Why is Newton's version of Kepler's third law so useful to astronomers? It is the only way to…

A: Given, Newton's version of Kepler third law

Q: On Earth a book has a mass of 5-kg, what would be the mass of the 5-kg book on Jupiter where the…

A: mass of book on earth = 5 kg acceleration due to gravity on earth = g acceleration due to gravity on…

Q: If the Moon were moved to be 2.6 times closer to the Earth, by how much would the gravitational pull…

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Q: If somebody tugged hard on your shirt sleeve, it would likely tear. But if all parts of your shirt…

A: Most people today know that the ocean tides are caused principally by the gravitational influence of…

Q: How does Earth's curvature relate to the speed needed for a projectile to orbit Earth?

A: An object falls about 5 m in the 1st second on free fall, the Earth curves downward 5 meters every…

Q: Imagine the distance between the Earth and the Sun suddenly decreased by 4 times. Would the force of…

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Q: 3 6. 2. An object's weight on the moon is proportional to its weight on Earth. For example, an…

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Q: For orbits of greater altitude, is the period longer or shorter?

A: Kepler’s third law of planetary motion gives,

Q: Note that the acceleration due to gravity near the surface of Earth is 9.80 m/s^2. From what…

A: Given: The acceleration due to gravity (g) near the surface of the earth is 9.80 m/s2. Introduction:…

Q: In two seconds, how far does a baseball fall beneath the straight-line path it would follow if…

A: If there is no initial speed, then it will not fall. It will remain at the same position since there…

Q: what factor would your weight change if Earth's diameter were quintupled and its mass was halved?

A: given  diameter = five times initial diameter  so radius = five times initial radius  mass = (1/2)…

Q: According to Newton's Law of Gravity, if you triple the distance between two objects, then the…

A: According to Newton's Law of Gravity, if you triple the distance between two objects, then the…

Q: What is the strongest force on Earth?

A: Given:  Strongest force on earth

Q: If you stopped an Earth satellite dead in its tracks, it would simply crash into Earth. Why then,…

A: The Earth rotates at high speed at 1000 miles per hour. So the satellite also should move at high…

Q: If an apple weighs 1 N at the Earth’s surface, it weigh only ¼ N twice as far from the Earth’s…

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Q: If the mass of Earth increased, your weight would correspondingly increase. But, if the mass of the…

A: Weight: The weight of an object on earth is the amount of gravitational force exerted by earth on…

Q: Which has greater value, a Newton of gold won on Earth or a Newton of gold won on the Moon?

A: Given data: Weight W= 1 N Known data: Acceleration due to gravity on earth =9.8m/s2 Acceleration due…

Q: How would your weight on the surface on the Earth compare to your weight at a point in space a…

A: Write the formula for the weight of an object.

Q: The International Space Station was launched to a distance of 3.50 × 10^2 km above the surface of…

A: Given : h = 3.50 x 102 km = 3.50 x 105 m w = 4.22 x 106 N

Q: Use Newton's law of universal gravitation to determine the force of gravitational attraction between…

A: Given: The mass of the earth is 5.97x1024 kg. The mass of the satellite is 281 kg. The distance of…

Q: With respect to spring and neap ocean tides, when are the tides lowest? That is, when is it best for…

A: The rise or fall of the waves occurs due to the gravitational pull of Moon either in new or full…

Q: For orbits of greater altitude, is the period of revolution of satellite longer or shorter?

A: Orbital speed of any satellite can be given using Kepler’s 2nd law of  motion which explain square…

Q: You feel a force of gravity when you stand on Earth. If you went to the moon, you would feel a force…

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Q: Your friend says that the primary reason astronauts in orbit feel weightless is that they are beyond…

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Q: What would happen to an orbiting planet if the gravitational forces cease to act on it?

A: If the gravitational forces cease to act on orbiting planet then they will not go under circular…

Q: The difference between mass and weight can be illustrated by consideringan astronaut. How do an…

A: mass is defined as the amount of matter available in a material  but  weight is defined as how much…

Q: If you have ever watched the launching of an Earth satellite, you may have noticed that the rocket…

A: When a satellite is launched from Earth, the rocket starts vertically upward. This is to achieve…

Q: Using the formula for gravity, show that the force of gravity on a 1-kg mass at Earth's surface is…

A: according to coulombs law The gravitational force between 1 kg object and Earth is F = GMm/r2…

Q: Newton’s law of universal gravitation states that the force of gravity between two bodies is…

A: (a) From the law of gravitation, the relation between the force due to gravity and separation is:…

Q: Are we under the gravitational force of any other planet then earth?

A: Yes, we are under the gravitational force of other planet then earth but since they are very far…

Q: How do we calculate gravity at higher elevations on earth?

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Q: Suppose you stood atop a ladder so tall that you were 3 times as far from Earth’s center as you…

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Q: ight of an object measured on planet 3 is a result of gravity ?

A: Weight is the measure of the force of gravity acting on a body. Weight is that force that acts at…

Q: Calculate the force of Earth's gravity on a spacecraft 2.00 Earth radii above the Earth's surface if…

A: we will first find out the acceleration due to gravity at this height and use it to determine the…

Q: This is a view of Earth from 100.0 km (above its surface). What is the force of gravity on a 77.2-kg…

A: Given data:  Altitude (h) = 100.0 km Mass (m) = 77.2 kg rearth = 6.38×106 m Mearth = 5.98×1024 kg…

Q: According to Newton’s law of universal gravitation, if the distance between two objects is doubled,…

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Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.