0
Add your answer:
Earn +20 pts
Why does an earthquake have only one magnitude?
Because magnitude is a measurement of the amount of energy released in an earthquake and this value will remain constant once the earthquake has finished. However the estimates seismologists make of this value may change as they gain more information about the earthquake...
What is the difference between pulse and impulse?
Both pulse and impulse are the types of unit step function. In case of impulse the response gains the value for short duration of time and then becomes 0 while in case of pulse it is not neccessary that the value of response become 0 after an interval it may remain constant also.............
A sling psychrometer is used to determine?
A sling psychrometer (which is a hygrometer) measures the moisture content of the atmosphere surrounding it. It is called a sling psychrometer because it is whirled around in the air until a constant value/reading is obtained from the wet-bulb thermometer.
How was the gravitational constant G first determined?
The gravitational constant appears in Newton's law of universal gravitation, but it was not measured until 1798-71 years after Newton's death-by Henry Cavendish (Philosophical Transactions 1798). Cavendish measured G implicitly, using a torsion balance invented by the geologist Rev. John Michell. He used a horizontal torsion beam with lead balls whose inertia (in relation to the torsion constant) he could tell by timing the beam's oscillation. Their faint attraction to other balls placed alongside the beam was detectable by the deflection it caused. Cavendish's aim was not actually to measure the gravitational constant, but rather to measure the Earth's density relative to water, through the precise knowledge of the gravitational interaction. In retrospect, the density that Cavendish calculated implies a value for G of 6.754 × 10−11 m3/kg/s2.The accuracy of the measured value of G has increased only modestly since the original Cavendish experiment. G is quite difficult to measure, as gravity is much weaker than other fundamental forces, and an experimental apparatus cannot be separated from the gravitational influence of other bodies. Furthermore, gravity has no established relation to other fundamental forces, so it does not appear possible to calculate it indirectly from other constants that can be measured more accurately, as is done in some other areas of physics. Published values of G have varied rather broadly, and some recent measurements of high precision are, in fact, mutually exclusive.In the January 5, 2007 issue of Science (page 74), the report "Atom Interferometer Measurement of the Newtonian Constant of Gravity" (J. B. Fixler, G. T. Foster, J. M. McGuirk, and M. A. Kasevich) describes a new measurement of the gravitational constant. According to the abstract: "Here, we report a value of G = 6.693 × 10−11 cubic meters per kilogram second squared, with a standard error of the mean of ±0.027 × 10−11 and a systematic error of ±0.021 × 10−11 cubic meters per kilogram second squared."
How can the value of the acceleration due to gravity can be calculated for any planet?
The basic equtiion is g=(GM)/(r squared). Where G is the gravitational constant, M is the mass of the object, and r is the radius of the object. There are a lot of other factors to include to get a more accurate number, but this equation will get you in the same ballpark.
What was Cavendishs contribution to Newtons Law of Gravitation?
Henry Cavendish's contribution to Newton's Law of Gravitation was his experiment to determine the gravitational constant, which allowed for the precise calculation of the gravitational force between two objects. This value was crucial for the accurate prediction of the behavior of celestial bodies based on Newton's law of gravitation.
What would the force of gravitation be if the distance between two objects is 500 newtons but is increased by 10 times?
If the distance between two objects is increased by 10 times, the force of gravitation will decrease to 1/100th of its original value. In this case, the force of gravitation would be 5 newtons.
Why gravatational force has constant value?
because mass has no relativity with attraction so that gravitation force is constant
Why is it necessary to use the universal gravitation constant in the universal law of gravitation?
To rationalize the units on both sides of the equation, E= -GmM/r, e.g if feet is used as the unit of distance r then the Constant G would have a different value.
Differentiate between universal gravitation constant abbreviated as G and acceleration due to gravity abbreviated as g.?
The universal gravitation constant (G) is a fundamental constant that appears in the law of universal gravitation, which describes the gravitational attraction between two objects. On the other hand, acceleration due to gravity (g) represents the acceleration experienced by an object in a gravitational field, typically near the surface of a massive body like Earth. The value of G is constant and the same throughout the universe, while the value of g can vary depending on the mass and radius of the celestial body.
Value of gravitational constant on earth and moon?
It's the same as that of Earth but the value of g varies from one object to the other. The value of the gravitational constant or the BIG "G" remains constant. I think you confused it with the LITTLE "g" which is the gravitation of a object (one with mass) or the acceleration due to gravity. The value of g on Earth and Moon is 9.8m/s^2 and 1.6249m/s^2, respectively. I hope this answers you all.
How do I calculate the mass of the Earth?
Use the universal law of gravitation, insert the known value for the gravitational constant, and use the fact that each kilogram is attracted by a force of 9.8 Newton.
What was the value of gravity in newtons 1 billion years ago?
Gravity is not measured in Newtons. The Gravitational Constant, as its name implies, was the same a billion years ago as it is today, which is: 6.67 × 10-11 m3 kg-1 s-2
What is the value of gravitation?
g = 9.8m/s²
What the law of universal gravitation?
the universal law of gravitation states that the forces of gravity acts between all objects in the universe. -Jerrold Robinson- Universal law of gravitation states that , in each and every object in this universe there is the force of attraction between them which is called gravitation force that is always directly propotion to the masses and indirectly proportion to the squre of the distance between them. i,e. G whose value is constant i,e.6.67*10^-11.
What is the law of gravitational gravitation?
the universal law of gravitation states that the forces of gravity acts between all objects in the universe. -Jerrold Robinson- Universal law of gravitation states that , in each and every object in this universe there is the force of attraction between them which is called gravitation force that is always directly propotion to the masses and indirectly proportion to the squre of the distance between them. i,e. G whose value is constant i,e.6.67*10^-11.
What is G in physics and what is the value of G?
In physics, G usually refers to the gravitational constant, which is a fundamental constant that appears in the law of universal gravitation equation. The value of the gravitational constant is approximately 6.674 × 10^-11 m^3 kg^-1 s^-2.
