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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
What pull of the gravity on seawater causes?
The pull of gravity on sea water is from the moon. This causes tides. Like when you are at the beach low tides and high tides occur right? So, the moon pulls on the earth and the water follows the moon's gravitational pull. Hope this helped:)
What are the three types of pressure that can push against the inward force of gravity?
The three types of pressure that can push against the inward force of gravity are thermal pressure (due to high temperatures), radiation pressure (from electromagnetic radiation), and degeneracy pressure (resulting from quantum effects in dense matter).
Why does earth have the most amount of gravity?
The amout of gravity is directly related to the mass of the body, since the earth has more mass it also has more gravity than the moon just like Jupiter has more mass than earth so it has more gravity.
What factors affect the speed at which objects move through water?
The speed at which objects move through water is affected by several factors, including the shape and size of the object, the density and viscosity of the water, and the presence of any obstacles or currents that may impede its movement. Additionally, the force exerted on the object and the surface area in contact with the water also play a role in determining its speed.
How thick is the earth's gravity field?
Earth's gravitational field extends to infinity.
No matter how far you are from the earth, It's gravitational field will always pull you towards it. However, the further you are from the earth, the weaker that force will be.
Erosion caused by gravity, also known as gravitational erosion, occurs when the force of gravity pulls materials downslope, causing them to be transported and eroded. Examples include rockfalls, landslides, and creep. Over time, these processes can shape landscapes and contribute to the movement of sediment and soil.
How does the gravitational pull of the moon and the sun cause spring and neap tides?
When the Moon and the Sun are on the same side of the Earth, or on opposite sides of the Earth (i.e., full moon or new moon), their effects are in the same direction, and the tides are stronger (spring tides). When they are at right angles, their effects will partially cancel, and the tides are weaker (neap tides - not sure about the spelling).
It doesn't have enough gravity to have an atmosphere?
The moon is one of the heavenly bodies that do not have gravity and hence lack atmosphere. It is also worth noting that the moon does not emit light of its own but rather reflects the sun's light.
Which planet has the strongest gravity and why?
Jupiter has the strongest gravity among the planets in our solar system. This is because Jupiter is the largest planet, and its mass creates a stronger gravitational pull compared to the other planets.
What is a plants response to gravity?
Plants use gravity to help determine the direction in which to grow their roots and stems. This response is known as gravitropism - roots grow downward with gravity, while stems grow upward against gravity, a process mediated by plant hormones called auxins.
Why cannot gravity be detected with instruments?
Gravity can be detected, provided the system used was not calibrated in a major gravitational field. It involves placing a known mass in a vacuum chamber and dropping, then recording the time it took to get from top to bottom. Using kinematics we can calculate the gravitational force and therefore the gravity at that point in space.
How is the force you apply by pushing on a rock different from the force of gravity on the rock?
The force you apply by pushing on a rock is due to your muscles exerting force directly on the rock, known as external force. This force is a contact force that can vary in strength and direction. Gravity, on the other hand, is a constant force pulling the rock downward towards the Earth, known as a non-contact force.
What is the maximum recession velocity of the galaxy observed?
Some of the furthest galaxies are believed to be "travelling" faster than the speed of light.
They are not actually "travelling" faster than the speed of light, but creating space, faster than the speed of light.
What is the impact velocity of a rock thrown at 8ms from 100m cliff?
For these calculations, air resistance is neglected and acceleration due to
gravity is assumed to be -9.8 m/s2. It is assumed the the rock was thrown horizontally.
Velocity is a vector, with an x component and a y component. The x component will not change, so the x component at the point of impact will be 8 m/s. The y component of the velocity is initially zero, and the acceleration is -9.8 m/s2. The final y component of the velocity can be found using the formula
vy2 = v0y2 + 2(a)(h)
so vy2 = 2(-9.8)(-100), so vy is 44.3. The x and y components of the velocity vectors now need to be put to together using the Pythagorean theorem. So
v2 = 44.32 + 82 so the final velocity is 45.02 m/s. The angle relative to the ground can be found using the tangent. tan-1(44.3/8), which is 79.8 degrees.
What is the impact velocity of a rock thrown horizontaly from a cilff?
The impact velocity of a rock thrown horizontal from a cliff depends on two things, the initial speed of the rock (vi) and the height of the cliff (h). The final velocity (impact velocity) is represented by vf
For this formula, air resistance is neglected, and acceleration due to gravity is assumed to be 9.8 m/s2. The acceleration is positive here because down is being treated as the positive direction. You will get the same result if you use negative 9.8 m/s2 and make the height negative. sqr() means square root.
vf = sqr(19.6h + vi2)
For example if the rock was thrown off a 3 meter high cliff at 20 m/s, the impact velocity would be sqr(19.6 x 3 + 202), which would be sqr(58.8 + 202), which would be 21.42 m/s.
The angle relative to the ground is the inverse tangent of sqr(19.6h)/vi
which in this case is tan-1( sqr(19.6 x 3)/20), which is tan-1(7.67/20) which is 21.0 degrees.
Who invented that there is gravity on the earth?
Gravity was not invented, it was discovered by Isaac Newton.
Would you die if you went to a planet that had 400x stronger gravity than earth?
yes you will be crushed like a pan cake. because if for instance you weigh 20kgs and you went to a planet that had 400x stronger gravity than earth you would weigh 8000kgs and you wont even be able to move a muscle.
Special condition: if the planet were rapidly rotating then the gravity about its equator would be significantly less than that at the poles. To reduce a 400g gravity to 1g about its equator and if the planet had a equatorial radius of that of Jupiter
71 492 kilometers
399*(10m/s2) = v2/r
3990 *71492000 = v2
v= 534091m/s
T=71492000/534091 = 133 seconds
then the planet would have to have an rotational period of only 133 seconds. Not impossible for a neutron star.
What is the difference between the gravitation and law of universal gravitation?
Gravitation is the natural force of attraction that exists between all objects with mass, while the law of universal gravitation is a scientific principle formulated by Newton that quantifies this force as being directly proportional to the product of the masses of the objects and inversely proportional to the square of the distance between them. In essence, gravitation is the phenomenon, whereas the law of universal gravitation mathematically describes how this force behaves.
By Newton second law,
F=ma;
20=5*a;
or a=4m/s/s.
initial velocity=0
and time=10s
so by first equation of motion
V=0+at, so
V=4*10=40m/s,
so kinetic energy of body=K.E=1/2*m*V2 = 0.5*5*1600=25*160=.....
What is a long large wave caused by the gravitational pull of the moon and sun?
A long large wave caused by the gravitational pull of the moon and sun is called a tidal wave or a tidal surge. These waves occur due to the gravitational forces of the celestial bodies acting on the Earth's oceans, causing the water levels to rise and fall in a regular pattern.
How do you use Google gravity?
First you need to get google chrome THEN.
Type in on google "google gravity" (without quotes). A list of related searches should drop down. go to the right of one that says google gravity and click i'm feeling lucky. It will direct you to a page and google will drop to the ground.
P.S. you will still be able to type in the fallen google search box. if you type google gravity in again and click google search, the information should also drop right before your eyes!
When a plant responds to the earth's gravitational pull what is it called?
When a plant responds to the earth's gravitational pull, it is called gravitropism. This phenomenon involves the growth response of plant organs, such as roots growing downward and stems growing upward, in relation to gravity.
The force of attraction between the pin and the magnet is greater than the force of gravity acting on the pin. As a result, the pin moves upwards towards the magnet instead of being pulled downwards by gravity.
What force plays an important role in maintaining the shape of the solar system?
Gravity plays an important role in maintaining the shape of the solar system by keeping the planets in their orbits around the Sun. The gravitational pull of the Sun is what keeps the planets moving in their paths without drifting off into space.
