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Atoms are particles of elements, substances that could not break down further. In examining atomic structure through, we have to clarify this statement. An atom cannot be broken down more without altering the chemical nature of the substance. For example, if you have 100 watches, they all behave like watches and tell time. You can destroy one of the watches: take the back off, remove the batteries, peer inside and drag things out. However, now the watch no longer acts like a watch. So what does as atom look like inside? Atoms are constituted of 3 types of particles protons, electrons and neutrons. These particles have different types of properties. Electrons are small, very light particles that possess negative charge (-). Protons are larger and heavier than electrons and own the opposite charge. Each atom is made up of a grouping of these particles. The charge of an electron is exactly equal and opposite to that of a photon. This elementary charge e is 1.6*1-19C. The mass of a proton or a neutron is 1.673*10-19C. The mass of an electron is only 0.911*10-27 all the protons and the neutrons which constitute an atom combine to form its nucleus. Thus, the nucleus consists of all the positive charge and almost the whole mass of the atom. The nucleus is a very dense positively charged mass. The negatively charged electrons of the atom move round the positively charged nucleus. The number of electrons there in an atom is equivalent to the number of protons. Consequently, an atom is a neutral particle. The proton an electron stays together because just like two magnets, the opposite electrical charges attract each other. What keeps the two from crashing into each other? The particles in an atom are not at rest. The electron is continuously spinning around the nucleus. The centrifugal force of the spinning electron puts the two particles from coming into contact with each other much as the earth's rotation keeps it from plunging into the sun. Every atom of an element consists of the same number of protons. The atomic number of an element indicates the number of protons present in each one of its atoms. The periodic table of elements displays elements arranged with increasing atomic number. It contains the symbols and number of the elements. The number of neutrons present in the atom of an element can vary. Thus, each atom of an element consists of the same number of protons, but may have dissimilar number of neutrons. Such atoms are called isotopes. Many elements can exist in a number of isotopic forms. The atomic weight or weight of each atom is given relative to the atomic mass of the carbon isotopes C12.
Deriving the Relativity of Simultaneity Animation in which shows how the relative nature of the simultaneity of two events must follow from the existence of length contraction.
Question 1. Discuss the concept of longitudinal and transverse relation. 2. What is k-space? Write a note on k-space trajectories. 3. Name the 3 components of MRI system.
a car has a mass of 34.01 kg. The race lasts 30 seconds. you think if the car attains an acceleration of .55 m/s^2 to attain a final velocity of 16.54m/s it will win the race. what
There is strong evidence that some short-duration gamma-ray bursts occur in systems with no star formation and where no massive stars are present, such as elliptical galaxies and g
(1) In Boolean algebra only two types of state variables (0 and 1) are permitted. (2) The variables (A, B, C ....) of Boolean algebra are subjected to three operations.
There are mainly three parts of Logic gates (1) The 'OR' gate (i) It has two inputs (A and B) and only one output (Y) (ii) Boolean expression is Y = A + B (iii
A fishing line's lead sinker has a volume of 1.40 x 10 -5 m 3 . The density of lead is 1.2 x 10 4 kg/m 3 . What is the apparent weight of the sinker when immersed in freshwat
Explain formation of a potential barrier in a p-n junction Formation of Potential Barrier in a P-N junction: The two kinds of extrinsic semiconductors p-type and
What is a fiber optic sensor? Fiber optic sensor: A fiber optic sensor is a sensor which uses optical fiber either like the sensing tool ("intrinsic sensors"), or implies as
explain spherical capacitor?
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