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Gravity
One of the four fundamental interactions, gravity is responsible for the fact that any objects with mass attract one another. According to general relativity, it is a space time curvature, but according to quantum mechanics it is the result of exchanges of virtual gravitons.
4,784 Questions
Does specific gravity affect hydrostatic pressure?
Yes, specific gravity does affect hydrostatic pressure. The hydrostatic pressure exerted by a fluid is directly proportional to the specific gravity of the fluid. A fluid with higher specific gravity will exert greater hydrostatic pressure at a given depth compared to a fluid with lower specific gravity.
How does the slingshot effect or gravity work to assist a change in orbit of a spacecraft?
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Nope, that's wrong. An orbit is (by definition) symmetrical. There is no change of energy in an orbit (that is, no change to the sum of kinetic energy and potential energy). Any kinetic energy gained by a spacecraft on approach to a planet, by trading gravitational potential, must be lost on leaving it, as the kinetic energy is converted back into potential.
You can only make sense of a gravity assist by also considering the planet's orbit around the sun. By arranging a suitable slingshot configuration you can steal the orbital energy of the planet around the sun and give it to the spacecraft. The planet ends up in a lower (less energetic) orbit, while the spacecraft ends up in a higher orbit relative to the sun. It has nothing to do with the centripetal force of the spacecraft's orbit or hyperbolic trajectory around the *planet*.
Pressuron theory (2013) by Olivier Minazzoli and Aurélien Hees
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How does gravity relate to a dreams ability to erode and deposit materials?
Gravity plays a role in the erosion and deposition of materials in dreams by influencing the movement and distribution of those materials. In dreams, gravity can affect how particles are carried away by winds or water, leading to erosion, and how they settle down to form new sedimentary layers, resulting in deposition. Gravity ultimately helps shape the dynamic landscapes and environments encountered in dreams.
What is the downslope movement of rock regolith and soil under the direct influence of gravity?
The downslope movement of rock regolith and soil under the direct influence of gravity is called mass wasting or mass movement. It includes processes such as landslides, rockfalls, and slumps, where materials move downhill due to the force of gravity. These movements can be triggered by factors like heavy rainfall, earthquakes, or human activities.
"rain"
How does the sun and gravity affect groundwater?
The sun can evaporate groundwater, reducing its levels. Gravity helps to draw groundwater downward through the soil and rock layers, creating an underground flow. The gravitational force also influences the movement and potential contamination of groundwater by directing its flow patterns.
How does flood water and low gravity affect erosion and deposition?
Flood water can accelerate erosion by carrying away large amounts of sediment and debris. In low gravity environments, such as on Mars or the Moon, erosion is typically slower due to reduced impact forces of flowing water. Deposition in flood waters is influenced by gravity, with heavier particles settling out first, while in low gravity environments, sedimentation may be less pronounced.
How is gravity involved in the erosion of earths surface by mass movement?
Gravity plays a key role in mass movement erosion by pulling rock and soil down slopes. When gravity overcomes the resistance of friction and cohesion holding the material in place, mass movement processes like landslides, rockslides, and mudslides occur. Gravity acts as the driving force that causes the material to move downslope, shaping and reshaping the Earth's surface over time.
Where does Gravity pulls tectonic playes?
Gravity pulls the tectonic plates downward, causing them to slide and collide with each other. This movement is a key driver of processes such as subduction, where one plate is forced beneath another, and the creation of mountain ranges.
Can earths gravity increase or decrease explain?
Yes, it is not a constant. The force of gravity is related to the distance from the centre of the earth so that the force of gravity will be slightly reduced at altitudes. Also, the earth is not a perfect sphere - it bulges at the equator and is flatter at the poles. So the force of gravity will be greater at the poles. The force of gravity is also affected by what is under the surface: if standing over dense rocks, the force will be greater. Finally, the force of gravity is also higher after heavy rainfall. [I guess that is because the water fills up all the air gaps in the soil and so increases its density.]
What affect does gravity have on earth?
Gravity is the force that pulls objects toward the center of mass, keeping everything on Earth's surface. It affects the weight of objects on Earth and creates tides in the oceans due to the gravitational pull of the moon. Gravity also influences the orbit of the Earth around the sun and the moon around Earth.
What land form is caused by gravity and the hydrospere?
A canyon is a land form that is shaped by gravity and the hydrosphere. Flowing water erodes the rock over time, creating a deep, narrow valley. Gravity plays a role by pulling the water downward, accelerating erosion processes.
What does gravity affect in the water cycle?
Gravity affects the movement of water in the water cycle by causing precipitation to fall as rain, snow, sleet, or hail. Gravity also influences the flow of water downhill as runoff into rivers, lakes, and oceans, as well as the movement of groundwater underground.
What is slate specific gravity?
The specific gravity of slate typically ranges from 2.6 to 2.8. This means that slate is denser than water, which has a specific gravity of 1. This characteristic contributes to its durability and suitability for various construction applications.
What percent of Earth's gravity?
Earth's gravity is approximately 9.81 m/s^2. This equals about 100% of Earth's gravity.
What features are formed from gravity erosion?
Gravity erosion forms features such as cliffs, valleys, and slopes. These features are the result of gravitational forces pulling rocks and sediment down slopes over time, shaping the landscape.
When gravity causes erosion what is it called?
When gravity causes erosion, it is called mass wasting. This process occurs when the force of gravity acts on rocks and soil, causing them to move downhill due to factors such as steep slopes, weathering, and unconsolidated materials. Mass wasting can result in various landforms such as landslides, rockfalls, and slumps.
How are salinity and specific gravity related?
Salinity is a measure of the total amount of dissolved salts in water, while specific gravity is the ratio of the density of a substance to the density of a reference substance. In the context of seawater, salinity and specific gravity are related in that as salinity increases, the specific gravity of the water also increases due to the increased concentration of dissolved salts.
How does gravity affect the oceans?
Gravity will tend to pull the water down the "hill" or pile of water against the pressure gradient.
Gravity of chemcial weathering?
Chemical weathering is the breakdown of rocks through chemical reactions. Gravity can contribute to chemical weathering by exerting pressure on rock formations, causing them to crack and fracture. This can expose a larger surface area of the rock to chemical agents like water and oxygen, accelerating the process of chemical weathering.
