How can we determine the size of the Earth? It was generally agreed upon that measuring the size of Earth could be done by measuring the altitude of a star from two cities situated on the same meridian. Then, a difference expressed in degrees would be found. How is the Earth’s curvature measured? How could […]
What is load measured in?
What year will the sun explode?
What year will the sun explode? In about 5.5 billion years the Sun will run out of hydrogen and begin expanding as it burns helium. It will swap from being a yellow giant to a red giant, expanding beyond the orbit of Mars and vaporizing Earth—including the atoms that make-up you. Is Sun getting weaker? […]
What is the degree of freedom at critical point?
What is the degree of freedom at critical point? In the critical point the difference of density between the liquid phase and the vapour phase is so small the are indistinguishable, hence considered as single phase. So according the gibbs phase rule (. F=C – P +2) the degree of freedom should be 2. What […]
What is the frequency of 500 nm wavelength light?
What is the frequency of 500 nm wavelength light? What can be said about the frequency of the wave? Solution: Given, the wavelength of the photon particle = 500 nm. In order to calculate the frequency of the photon particle, we use the formula given above. The frequency of the wave is equal to 6×10-4 […]
Why do electrons want to be stable?
Why do electrons want to be stable? A complete octet is very stable because all orbitals will be full. Atoms with greater stability have less energy, so a reaction that increases the stability of the atoms will release energy in the form of heat or light. A stable arrangement is attended when the atom is […]
What is Catenation explain with reference to group 14?
What is Catenation explain with reference to group 14? The property of self-linking of atoms of an element through covalent bonds to form straight or branched chains and rings of different sizes is called catenation. Amongst the group 14 elements, C-C bond strength (355 kJ mol1) is maximum, therefore, carbon shows maximum tendency for catenation. […]
Who is the father of classical physics?
Who is the father of classical physics? Galileo Galilei Why did Einstein oppose quantum mechanics? Einstein always believed that everything is certain, and we can calculate everything. That’s why he rejected quantum mechanics, due to its factor of uncertainty. Who can file a suit upon quantum meruit? A claim of quantum meruit hence is a […]
How does Leaning Tower of Pisa not fall?
How does Leaning Tower of Pisa not fall? In the end, the Leaning Tower of Pisa does not fall because its center of gravity has been carefully kept within its base. The Leaning Tower doesn’t fall because its center of gravity is carefully kept within its base. How did Galileo discover free fall? Galileo conducted […]
Can a Boeing 747 break the sound barrier?
Can a Boeing 747 break the sound barrier? As it shot across the Atlantic, the Boeing 747-400 jet reached a top ground speed of 825 mph. However, the jet did not actually break the sound barrier, because that is measured by its airspeed, or the speed of the plane relative to the air through which […]