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General and Special Relativity
Relativity is the theory stating that all measurements depend on the relative motions of the observer and the observed. The theories of general and specific relativity were both proposed by Albert Einstein.
500 Questions
What instrument measures the speed of an airplane?
Asked by Wiki User
In aviation, the dial you look at to read your speed through the air is known as an IAS dial (indicated air speed). This dial is an indiaction only, as it works by measuring the amount of air entering the measuring tube (Pito tube); ergo a large head wind (blowing into the front of the aircraft) will give a higher indicated air speed than may actually be true.
ias dial
Is there a maximum limit to gravity?
Asked by Wiki User
According to current theories of physics, there is no maximum limit to gravity. Gravity can become arbitrarily strong if a sufficient amount of mass or energy is concentrated in a small enough space. However, at extreme conditions such as those inside a black hole or during the early stages of the universe, our current understanding of physics may break down.
What is non uniform motion?
Asked by Wiki User
Non-uniform motion refers to the type of motion where the speed or direction of an object is changing over time. In non-uniform motion, the object is not moving at a constant speed or in a straight line. Instead, its velocity is varying, and it may be accelerating or decelerating.
Does earth change the speed of its spining?
Asked by Wiki User
No, the speed of Earth's rotation remains relatively constant. However, there are factors such as tidal friction and atmospheric wind patterns that can cause very small fluctuations in the length of a day over long periods of time. These fluctuations are not noticeable to us in our daily lives.
How is nuclear binding energy related to the mass defect?
Asked by Wiki User
Nuclear binding energy is the energy required to hold the nucleus together. The mass defect is the difference between the mass of a nucleus and the sum of the masses of its individual protons and neutrons. The mass defect is converted into nuclear binding energy according to Einstein's famous equation, E=mc^2, where E is the energy, m is the mass defect, and c is the speed of light.
What is the fastest speed you travel at and still make a successful GSM call?
Asked by Wiki User
The minimum speed required to make a successful GSM call can vary depending on factors such as network coverage and signal quality. However, in general, you can make a successful GSM call while traveling at speeds up to around 120-130 km/h (75-80 mph) on highways, as long as there is strong network coverage.
A certain spring stretches 6 cm when a load of 15 N is suspended from it How much will the spring stretch if 30 N is suspended from it and it doesn't reach its elastic limit?
Asked by Wiki User
It will stretch 6 cm.
What are the parts of home reading report?
Asked by Wiki User
Title:
Author:
Publisher and date of Publication:
No. of Pages:
Summary:
Setting:
Characters:
Plot:
Theme/moral lesson:
Conclusion:
In bar room 8 ball is it necessary for 1 the object ball to hit a cushion after contacted vy the cue ball or 2 the cue ball to hit a cushion after contacting the 8 ball?
Asked by Wiki User
In all the bars Ive shot at here on Oklahoma,neither is required unless specially requested by opponent and both parties agree to that before the break.
What are the 3 branches of pure science?
Asked by Wiki User
The 3 branches of science is life science, physical science and earth science.
The life science, known as biology, deals with all living things. It studies the behavior, history, and developement of living organisms. The french naturalist Jean-Baptiste Lamarck introduced the term 'biology' in the 1800s. Some of the subdivisions of life science are the Botany, Zoology, Genetics etc.
Physical science deals with the science of matter and energy. Some of its subdivisions are Physics, Chemistry and Astronomy.
Earth science is sometimes considered as a part of physical science, but now it stands apart as the earth faces more and more critical problems. Earth science is firther subdivided into specific fields of studies, some of which are Geology, Paleonthology, Oceanography, Meteorology and Petrology.
How does velocity effect soccer?
Asked by Wiki User
Speed may not always affect soccer in my opinion. It is really just about stamina and not even that much because you can always be subbed-out if you get tired and have subs. Sure, speed helps trick other players and get the ball up the field faster but if you don't like to run then goalie would probably be the best position for you (but you still have to run in goal if you're on a serious team).
Where did Einstein discover E mc2?
Asked by Wiki User
Einstein did not DISCOVER E= mc^2
He derived this formula based on other parts of his work. Specifically, he showed that an object that radiates an amount of electromagnetic energy 'E' would lose an amount of mass equal to E/c^2 At the time, this formula was an almost trivial part of 1905 papers.
He did the above while working as a patent clerk in Bern, Switzerland.
When two objects of different masses released from a height under normal conditions which object falls first?
Asked by Wiki User
Answer #1:
Under normal circumstances the less aerodynamic object will fall first. Mass has no direct effect except in the way that it affects the coefficient of drag.
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Answer #2:
If not released at the same time, then the object released first falls first. If both released at the same time, then see Answer #1 above for a detailed description of their behavior.
Which scientist was responsible for the theory of relativity and whose theories helped create the atomic bomb?
Asked by Wiki User
Albert Einstein developed both the Special and General Theories of Relativity. While the Special Theory of Relativity predicted that mass and energy were equivalent, it in no way helped create the atomic bomb.
It took the discovery of nuclear fission in uranium-235 by a joint German and Swedish team to suggest that there might be a practical means to release a very very tiny fraction of that "mass energy". Nuclear fission was not predicted by any theory (transuranic elements were what was expected)! Lise Meitner (see image above) a Jewish physicochemist working in Sweden was the member of the team that proved it was fission not the expected production of transuranics that happened in the experiment. As the Germans were part of this team it was correctly assumed that Nazy Germany was working on building an atomic bomb.
This fear is what prompted the British then later the US to work on building an atomic bomb too, as a defence against the Nazi atomic bomb.
Why do people think that rubber sheet with a ball analogy for gravity is good?
Asked by Wiki User
I don't know the reason.
A lot of really clever people have used it, but I think it's more or less useless.
I used to like it, before I really thought about it.
The idea is that the ball distorts the rubber sheet just like mass distorts space.
The distortion of space (spacetime to be exact) is the basis of our modern understanding of gravity.
Some people like this analogy until you point out the problems.
Some things are just really hard to explain.
It was simpler with Isaac Newton. He just had no explanation for gravity.
OK, it's only an analogy, but here's one problem:
The rubber sheet is only 2 dimensional, of course.
Here's another problem : The whole analogy is meant to "explain" gravity.
What causes the ball (mass) to distort the sheet (space)?
The ball is pulled towards the Earth by.........gravity.
Yes, but no , well, I mean........
What polarity are the different quarks?
Asked by Wiki User
The Top, Charm, and Up quarks have +2/3 of an 'elementary' charge.
The Bottom, Strange, and Down quarks have -1/3 of an 'elementary' charge.
