What is an example of a falsifiable prediction?
For example, given the statement “all swans are white” and the initial condition “there is a swan here”, we can deduce “the swan here is white”, but if what is observed is “the swan here is not white” (say black), then “all swans are white” is false, or it was not a swan.
How is gravity created?
Earth’s gravity comes from all its mass. All its mass makes a combined gravitational pull on all the mass in your body. You exert the same gravitational force on Earth that it does on you. But because Earth is so much more massive than you, your force doesn’t really have an effect on our planet.
What are Newton’s 3 Laws called?
The laws are: (1) Every object moves in a straight line unless acted upon by a force. (2) The acceleration of an object is directly proportional to the net force exerted and inversely proportional to the object’s mass. (3) For every action, there is an equal and opposite reaction.
What law is gravity?
Newton’s law of universal gravitation is usually stated as that every particle attracts every other particle in the universe with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.
What is the first law of gravity?
Newton worked in many areas of mathematics and physics. He developed the theories of gravitation in 1666, when he was only 23 years old. Newton’s first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force.
What is Newton’s second law called?
Newton’s second law of motion is F = ma, or force is equal to mass times acceleration. Learn how to use the formula to calculate acceleration. Created by Sal Khan.
What is more powerful than gravity?
The strong nuclear force, also called the strong nuclear interaction, is the strongest of the four fundamental forces of nature. times stronger than the force of gravity, according to the HyperPhysics website. And that’s because it binds the fundamental particles of matter together to form larger particles.
How do astronauts poop?
Poop is vacuumed into garbage bags that are put into airtight containers. Astronauts also put toilet paper, wipes and gloves — gloves help keep everything clean — in the containers, too.
Can gravity be manipulated?
The better news is that there is no science that says that gravity control is impossible. First, we do know that gravity and electromagnetism are linked phenomena. Another way is through new theories from quantum mechanics that link gravity and inertia to something called “vacuum fluctuations.”
How do you neutralize gravity?
As of yet, no technology exists to neutralize the pull of gravity. The best way to approximate the feeling of weightlessness on Earth is to ride onboard a plane flying in parabolic arcs that mimic the shape of Saint Louis’s Gateway Arch.
What frequency is gravity?
Gravitational waves are expected to have frequencies 10−16 Hz < f < 104 Hz.
How do you detect gravity waves?
LIGO can detect this squeezing and stretching. Each LIGO observatory has two “arms” that are each more than 2 miles (4 kilometers) long. A passing gravitational wave causes the length of the arms to change slightly. The observatory uses lasers, mirrors, and extremely sensitive instruments to detect these tiny changes.
What did gravitational waves prove?
With a handful of discoveries already under their belts, gravitational-wave scientists have a long list of what they expect more data to bring, including insight into the origins of the Universe’s black holes; the extreme conditions inside neutron stars; a chronicle of how the Universe structured itself into galaxies; …
What are gravitational waves in simple language?
Gravitational waves are ripples in spacetime which are created whenever objects with mass move. They were predicted by Albert Einstein in 1916 on the basis of his theory of general relativity. To make gravity waves strong enough to be detected, something very massive must accelerate very fast.
How can we use gravitational waves?
Gravitational waves can also be used to observe systems that are invisible (or almost impossible to detect) to measure by any other means. For example, they provide a unique method of measuring the properties of black holes.
What is the impact of gravitational waves?
The effect that gravitational waves have on Earth is thousands of times smaller than the width of a proton, one of the particles that makes up an atom’s nucleus. That said, gravitational waves weaken the farther they travel, much like ripples on a pond.