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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 is the unit of acceleration?
(Any unit of length or distance) divided by (the square of any unit of time)
is a unit of acceleration.
m/sec2
What are normal results for urine specific gravity?
The specific gravity can be an excellent source of information on hydration. This is an elevated result indicative of concentrated urine associated with dehydration. A normal specific gravity ranges from 1.010 to 1.020.
normal range of S.G. in urine is 1.003 to 1.030.
It varies depending on the Rocket. The Saturn V rockets that took men to the moon eventually accelerated up to 17,500 mph.
New Horizons, a space probe sent to Pluto aboard a modified Lockheed Martin Atlas V 551 rocket, achieved the highest launch velocity and so has left Earth faster than any other spacecraft to date (36,900 mph).
Why is it often said to be desirable for football players to have a low center of gravity?
That makes ball carriers harder to tackle and defensive players harder to block. The lower the center of gravity, the more stable the stance is and the tougher it is to be moved. The higher the center of gravity, the easier it is to be moved by a block or shove.
Why is earth the only planet with gravity?
All objects with mass have gravity, so all planets have gravity. However, the strength of gravity depends on the mass of the planet. Earth's gravity is strong enough to hold objects to its surface, which is why we feel it as weight.
What is the metric unit for gravity?
-- The acceleration of gravity has units of [ meters/second2 ] .
On or near the Earth's surface, it's about 9.8 of them.
-- The force of gravity has units of [ Newtons ]. On or near the
Earth's surface, it's about 9.8 of them per kilogram of mass.
In Newtons, which are Kilogram meters per second, or Km/s2. It is measured as a force.
It is also common to refer to the acceleration of gravity or "g" and describe it merely as an acceleration, since the gravity of an object accelerates all other objects at the same rate (if the distances involved are about the same). 'g' is almost always defined by earth's gravitational acceleration at it's surface, of 9.8KG/s2, and is used as the standard unit.
a gravity bong is a type of bong that is usually home made. First, finish your 2 liter soda bottle and cut the bottom of the bottle. Second, make a hole in the middle of your cap and put a bowl on it, make sure it is the good size. Third, fill a bucket with water. Forth, put the bottle in the water leaving the cap sticking out of the water. Fifth, light your weed up and enjoy.
If you want pictures, go to google images and type gravity bong. I guarantee you will understand what it is and what it is for.
Specific weight is the weight of the material per unit volume. Water has the specific weight of 62.43 pounds per cubic foot or 9.807 Newtons per cubic meter.
How does the moon low gravity affect the game of golf?
The lower gravity on the moon allows golf balls to travel much farther and stay in the air longer compared to Earth, leading to longer drives and higher shots. Players would need to adjust their swing power and technique to account for the reduced gravity in order to accurately gauge distances and hit the ball straight.
Specific gravity, usually referred to as relative density is the ratio of the mass of a given volume of a substance to the density of a different reference substance. Water is often used as the reference.
How do you find the gravitational potential energy?
Gravitational Potential Energy is equal to Potential Energy therefore the formula for GPE (Gravitational Potential Energy) is PE=mass x gravity x height therefore the formula is PE=mgh
What is the effect of gravity on blood pressure?
It is important to note that the flow of blood in the body is directly influenced by gravity. When a person is standing, gravity helps pull the blood downward to the lower extremities. Without gravity, blood tends to remain closer to the heart. The force of gravity also makes it more difficult for the blood to flow upward to return to the heart and lungs for more oxygen. Our bodies have evolved to deal with the ever-present downward force of gravity; our leg muscles function as secondary pumps to help in the process of venous return which is blood flow back to the heart, also referred to as cardiac input). During walking or other leg movements, the muscles contract, forcing blood up through the veins of the calf toward the heart. The valves in the veins are arranged so that blood flows only in one direction (Figure 10). This mechanism effectively counteracts the force of gravity.
Why dont people fall out og roller coasters at the amusement park?
Water swirls down a drain because the hole that the water is sucked down into is small to create a tornato. Water swirls down a drain because of gravity force. Water swirls down a drain because the world rotates all the time, creating a round or swirl movement in a drain.
How does gravity affect people riding roller coasters?
Gravity affect people on 6 axis. They are positive or negative x (lateral G's), positive or negative y (vertical G's), and positive or negative z (acceleration G's). Vertical G's When on a traditional coaster (rider is sitting in an upright facing forwards), vertical G's act on the rider up and down. When vertical G's are positive, they make the rider feel like he/she is being pushed into his/her seat. When negative vertical G's are present, they make the rider feel weightless, or even give people that "Stomach in your throat" feeling. Lateral G's When on a traditional coaster (rider is sitting in an upright position facing forwards), lateral G's act on the rider left and right. Positive lateral G's make the rider feel like he/she is being pushed to the right, and negative lateral G's make the rider feel like he/she is being pushed to the left. Acceleration G's When on a traditional coaster (rider is sitting in an upright position facing forwards), acceleration G's act on the rider forward and backwards. Positive acceleration G's make the rider feel like he/she is being pushed forwards (like quickly speeding up in a car; mainly felt on roller coasters with launches). Negative acceleration G's make the rider feel like he/she is being pulled backwards (mainly felt on the brakes of a roller coaster when decelerating)
When does acceleration happen on a roller coaster?
Any time you're going up a hill causing your speed to decrease, or going
down a hill causing your speed to increase, or passing through the top of
a hill and starting back down, or passing through the bottom of a hill and
starting back up.
So that's pretty much all the time, except maybe the chain-lift up the first hill.
Is there gravity under the seas and ocean?
The effect of gravity is what makes objects that are more dense (mass per unit of volume) than water, like rocks, sink to the bottom. Objects that have less density than water will float because their bouyancy is stronger than the force of gravity.
Why does sea level remain same everywhere?
It doesn't actually. The moon will cause high tide in one part of the world while half way around there is low tide at the same time.
Something always brings me back to you.
It never takes too long.
No matter what I say or do I'll still feel you here 'til the moment I'm gone.
You hold me without touch.
You keep me without chains.
I never wanted anything so much than to drown in your love and not feel your rain.
Set me free, leave me be. I don't want to fall another moment into your gravity.
Here I am and I stand so tall, just the way I'm supposed to be.
But you're on to me and all over me.
You loved me 'cause I'm fragile.
When I thought that I was strong.
But you touch me for a little while and all my fragile strength is gone.
Set me free, leave me be. I don't want to fall another moment into your gravity.
Here I am and I stand so tall, just the way I'm supposed to be.
But you're on to me and all over me.
I live here on my knees as I try to make you see that you're everything I think I need here on the ground.
But you're neither friend nor foe though I can't seem to let you go.
The one thing that I still know is that you're keeping me down
Your keeping me down,
Your on to me, your on to me and all over
Something always brings me back to you
It never takes to long.
Does the sun's gravity affect the earth in its orbit?
The Sun's gravity force is the sole thing that keeps the planets in their orbits. Without it they would all fly off into outer space. The relative distance is important because the force is weaker at larger distances, so the planets there move more slowly.
The theory was worked out by Isaac Newton and others from the 18th century onwards, using earlier theory by Kepler in the 17th century.
Do astronauts feel gravity on space?
An object is said to be in free fall when the only force acting on it is its weight. All objects in a vacuum fall at the same rate regardless of their masses. All bodies in orbit, including the International Space Station (ISS), are in free fall, but as long as they are going fast enough their momentum keeps them in orbit instead of falling down. Since the net force acting on the astronauts and cosmonauts in the ISS are exactly the same as those acting on the ISS itself, with respect to the ISS they experience a net force of zero, which means that they are experiencing weightlessness.
Are there places that defy law of gravity?
Not really.
So far, everything humans has found is affected by gravity, and reacts to it in
fairly well understood ways.
Gravity is basically about how objects with mass pulls on each other. It's a force
that's dependent on the product of the masses involved, and the distance
between them.
Humans pull on Earth the same way as Earth pulls on humans.
If you're in space, you're a far, far away from anything heavy. The situation
has nothing to do with defying gravity, but due to the distances involved, we
don't notice it that much. But it's still there, doing its thing, entirely according
to the textbook.
Then there is the Zero-G flight, but that's not about defying gravity either.
Rather about understanding it, using it and countering it to create free-fall
conditions. And while seemingly very similar, free-fall and zero gravity aren't
the same thing.
By having a plane follow the same trajectory and speed as - say a thrown stone -
everything within the plane becomes weightless WRT the plane, for the descent
part of the trajectory, for about 20 seconds.
Apart from the plane being able to land, it's like being inside a falling elevator.
If you and the elevator are both falling at the same rate, there's no longer any
force pushing you against the floor.
Zero gravity is hard, and not really found anywhere inside out solar system.
Zero gravity means there's no force acting on you at all. Free fall is a lot easier,
and simply means that you and your immediate surroundings are free to react
the same way to the pull of gravity.
I believe it is Delirious?; you can find it on the Wow98 CD, but I do not know which CD of theirs it originates from.
