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what is frequency?
Frequency is the number of waves that pass a given point in one second. The frequency unit is called a hertz (Hz), named after the German physicist who first confirmed the existence of electromagnetic waves, Heinrich Hertz. The frequency formula is the wave speed divided by the wavelength.
Frequency is the number of waves that pass a given point in one second. The frequency unit is called a hertz (Hz), named after the German physicist who first confirmed the existence of electromagnetic waves, Heinrich Hertz. The frequency formula is the wave speed divided by the wavelength.
See lessCan gravity reach zero?
Contrary to popular belief, there's no such thing as zero gravity. Weightlessness and zero gravity are two different things. The earth's gravity keeps the moon in orbit. And astronauts are generally much closer to earth than the moon is, which means that the earth's pull on them has to be much stronRead more
Contrary to popular belief, there’s no such thing as zero gravity. Weightlessness and zero gravity are two different things. The earth’s gravity keeps the moon in orbit. And astronauts are generally much closer to earth than the moon is, which means that the earth’s pull on them has to be much stronger.
See lessDid Indians discover gravity?
In the 7th century, Indian astronomer Brahmagupta spoke of gravity as an attractive force.
In the 7th century, Indian astronomer Brahmagupta spoke of gravity as an attractive force.
See lessIs gravity Infinite?
As mentioned previously, the effect of the Earth's force of gravity extends for an infinite distance, becoming weaker and weaker. We can consequently never completely escape the attractive range (the gravitational field) of the Earth, never reaching the actual gravitational boundary of the Earth.
As mentioned previously, the effect of the Earth’s force of gravity extends for an infinite distance, becoming weaker and weaker. We can consequently never completely escape the attractive range (the gravitational field) of the Earth, never reaching the actual gravitational boundary of the Earth.
See lessIs gravity a theory yes or no?
Theories are ideas about facts. Theories cannot “become” facts. Gravity is called a force, or a curvature in space-time. We actually have two really good theories about gravity, but gravity itself is not a theory, it's a bunch of observed facts, and we have two theories about these facts.
Theories are ideas about facts. Theories cannot “become” facts. Gravity is called a force, or a curvature in space-time. We actually have two really good theories about gravity, but gravity itself is not a theory, it’s a bunch of observed facts, and we have two theories about these facts.
See lessWhy is gravity a theory or law?
The law of gravity describes and quantifies the attraction between two objects. But the law of gravity doesn't explain what gravity is or why it might work in this way. That's because that kind of explanation falls into the realm of theory.
The law of gravity describes and quantifies the attraction between two objects. But the law of gravity doesn’t explain what gravity is or why it might work in this way. That’s because that kind of explanation falls into the realm of theory.
See lessIs gravity a law or theory?
Isaac Newton's 1687 description of gravity was considered scientific law until Einstein's General Theory of Relativity, published more than two centuries later. Newton had explained gravity as a force that instantaneously acts over a distance. The result is a pull between any two objects in the univRead more
Isaac Newton’s 1687 description of gravity was considered scientific law until Einstein’s General Theory of Relativity, published more than two centuries later. Newton had explained gravity as a force that instantaneously acts over a distance. The result is a pull between any two objects in the universe.
See lessHow many laws are there in physics?
There are 12 basic laws of physics, though there are many other laws of physics too. The 12 basic laws of physics are: The four laws of thermodynamics. Newton's three laws of motion.
There are 12 basic laws of physics, though there are many other laws of physics too. The 12 basic laws of physics are: The four laws of thermodynamics. Newton’s three laws of motion.
See lessWhat is the SI unit of friction?
Friction is a type of force that opposes relative motion between two objects. Hence, friction will have the same unit as force. SI unit of force is newton (N).
Friction is a type of force that opposes relative motion between two objects. Hence, friction will have the same unit as force. SI unit of force is newton (N).
See lessWho discovered gravity?
Far more than just discovering the laws of gravity, Sir Isaac Newton was also responsible for working out many of the principles of visible light and the laws of motion, and contributing to calculus.
Far more than just discovering the laws of gravity, Sir Isaac Newton was also responsible for working out many of the principles of visible light and the laws of motion, and contributing to calculus.
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