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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
In vacuum, the force needed to lift a pound of feathers is exactly the same as the force needed to lift a pound of rocks. In air, the force needed to lift a pound of feathers is slightly smaller, as the buoyant force acting on the feathers is larger than the buoyant force on the rocks, because the density of the rocks is bigger.
Which force explains the attraction between all the objects?
The force that pulls objects into a circular path is called CENTRIPETAL FORCE.
Dimensional formula for gravity g?
The dimensional formula for gravity g is [LT^-2] where L represents length (meters) and T represents time (seconds). This indicates that gravity is defined as acceleration due to gravity and has units of meters per second squared (m/s^2).
What is the specific gravity of ethanol?
The specific gravity of ethanol is 0.794. This is for pure 100% ethanol. Specific gravity is the ratio of the density of a substance compared to the density of water. For example, water weighs 8.33 lb/gal at standard conditions (60 deg F). Ethanol weighs 6.61 lb/gal at standard conditions (60 deg F). Therefore, the specific gravity of ethanol is 6.61 divided by 8.33, equals 0.794.
A person can verify this result (0.794) by very fundamental experimental testing. Get a gallon of pure water and weigh it precisely. THIS will yield the number 8.33 lbs. Then do the same for ethanol; weigh a gallon of pure ethanol. This will yield the number 6.61 lbs. VOILA! 6.61 divided by 8.33 equals 0.794.
I did NOT actually do this weighing of the two liquids, but I COULD! I instead looked the values up in a standard reference book. My copy of "The Data Book on Hydrocarbons", also commonly referred to as 'the Maxwell data book', is a very familiar book to any one who works around the oil industry, as I did for 38 years.
Which of these can be defined as a roots downward growth as a respnse to gravity?
Geotropism is the term used to describe a plant's roots growing downward in response to gravity. This is a common plant behavior that helps roots penetrate deeper into the soil for better anchorage and access to water and nutrients.
Does air resistance act on boats?
As boats travel or sail on the sea, they move from areas of low temperatures ( high presure zone ) to high temperatures (low pressure). Therefore, areas of high have instatability in waves movement of the water whiles low pressure area have stable waves movement of water hence, ensures smooth navigation.
...................... this answer is from samuel and miipot from UNIVERSITY OF EDUCATION, WINNEBA-GHANA
How did sir isaac newton found out about gravity?
Newton did not discover gravity. He realized that the same force, gravitational force, that acts on all things here on earth go thru space and act on the moon to keep it in orbit. The same for the planets revolving around the sun.
How does gravity affect you in your daily life?
Everything you do is governed, regulated, and shaped by gravity, with the possible
exception of thinking.
Gravity is responsible for keeping you on your bed while you sleep, keeping you
down on the earth where you can walk and breathe, making sinking things sink
and floating things float, and keeping air down on the earth where you need it,
for just a few examples.
What is The velocity of the gravity of the earth?
ALL THAT'S WRITTEN BENEATH MY ANSWER IS WRONG!
The question is what is Earth's "ROTATION SPEED". The former answer below discusses what an individual's "TANGENTIAL SPEED" or "linear speed" is which is based on the radius to the axis of rotation.
ROTATIONAL SPEED is the measure of the number of rotations per unit of time. Therefore the broad value is the earth rotates once per 24 hours. A valid rotation speed could be 1 rotation/day or 0.042 rotations per hour or .000694 rotations per minute or "rpm". Rotational speed is independent of any radius. Rotational speed is the same for all objects located on the Earth.
Just as on a bicycle wheel that is spinning. Locations further from the axis will have greater TANGENTIAL speed. But they all complete one ROTATION at the same time.
If you're wanting to know how fast YOU'RE going in distance/time while on the Earth, then yes, you'd need to know the radius of the Earth at your specific latitude.
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That depends on where on Earth you are standing. At the poles, the Earth hardly spins at all, but as you travel towards the equator, the rotational speed picks up. This makes sense -- as the circumference of a circle increases, a single point along it has to travel faster to complete a revolution in the same amount of time.
The rotational speed of the Earth at the equator is about 1,038 miles per hour. The atmosphere at the equator is also slightly thicker due to rotation, and you weigh slightly less. At mid-latitudes, the speed of the Earth's rotation decreases to 700 to 900 miles per hour.
If the Earth were to stop spinning suddenly, the atmosphere would still be zipping along nicely at around 1,000 miles an hour. As a result, everything not attached to bedrock would pretty much be scoured clean.
If you have any more questions about the Earth's rotation, check out this nifty Ask a Space Scientist page. Looking for a cosmic perspective on how fast the earth is moving? Remember that all questions about motion or speed are only complete with an appropriate frame of reference.
Does Wendy from Gravity Falls like Dipper?
Well maybe or maybe not. Will just have to wait and see what happens during the series between the two. But till then, dipper will have to find some other girl to be with and that type of girl will have to be a lot like him, plus they have to be at the same age or close to that other ones age, plus they need to have a lot in common with each other and a great deal of understanding with one an other as well.
gravity can be simulated with the use of an advanced gravity simulator which uses acceleration to equal the weight of the body
What objects will the earth exert a greater gravitational pull than on a bicycle?
The Earth will exert a greater gravitational pull on objects with greater mass, such as cars, buildings, and mountains, compared to a bicycle. This is because the force of gravity between two objects is directly proportional to the mass of the objects, so the more massive an object is, the stronger the gravitational pull it experiences.
No, Gravity actually pulls upwards but the sheer mass of things makes them heavier and stay on the ground instead of flying away. This is how Birds are able to fly, because they have a mass inconsistency they partially float and then propel themselves with their wings.
What are objects from which light can not escape because of a gravitational pull at its surface?
A black hole. However, it does not have a surface but an event horizon.
How do the effects of gravity show that earth is almost spherical?
Proof of earth's shape is that earth casts a curved shadow on the moon during a lunar eclipse. Something flat like a book casts a straight shadow whereas objects with curved surfaces casts curved shadows.
What is the gravity of Mercury relative to Earth's?
If you weigh 100lbs on Earth, you would weigh 37.8lbs on Mercury.
What is Mercury's surface gravity in kg?
Local gravity can't be described in units of "kg".
The acceleration of gravity at the surface of Mercury is
3.697 meters (12.13 feet) per second2 .
Is gravitational potential energy a scalar or vector quantity?
Gravitational potential energy is a scalar. Gravity also has a vector energy cmV= cP.
Did Isaac Newton come up with the theory of gravity?
There was no exact date.
5th of July 1687 was the sharpest date, which was the date of publishing of the "Principia".
If you type into Google Principa Mathematica this is the calculus that he formulated to solve the mystery of gravity.
I know it was in the 1600's but cannot remember the exact date.
Olly
Is the value of acceleration due to gravity constant?
the acceleration of free fall ,it has a value of 9.8ms-2 ,every objected falling freely under the action of gravity always have this constant speed
Controlled Chaos.
To oppose gravity is to create an anti gravity apparatus.
Obviously, absence of gravity will lead to objects approaching the heavens(since no force to ground them to surface), thus, if gravity is viewed in form of magnetic fields, an 'unlike' pole will cause a 'like' pole to repel, thus creating an anti field force between the magnets.
For gravity, should you find the answer i'd suggest getting a patent to a hover board
Does only the Earth exert gravity?
All matter, including every star, planet, galaxy, or whatever, anywhere in the universe, exerts the same force of gravity, as described by Newton's Law of Universal Gravitation.
How do you find mass when given gravity and weight in Newtons?
When we calculate the net force acting on the object in these situations, we use the formula… FNET = Fa + Ff
When you want to calculate the acceleration of an object, always use the net force acting on it. FNET = ma
We need to think of the net force as the force pushing down on the scale causing it to give a reading. for example- The elevator pushing up on me will make me push down on the floor (Newton's 3rd Law). We will show this by making the acceleration (3.0m/s2) a negative value. The formula for this would look like this… FNET = Fg + Fa
Where is gravity on inertia and orbital motion?
Well, gravity is ok with them, but they don't really hang out or anything...
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