QUESTION: The uncertainty in an electron’s position is . a) Find the minimum uncertainty in its momentum. b) Find the minimum uncertainty in its velocity. c) What will be the kinetic energy of the electron if the momentum is equal to the uncertainty in momentum? Click Here For The Concept SOLUTION: Let’s suppose: is the […]
Conceptual Question on Heisenberg Uncertainty Principle. #2 Read More »
QUESTION: Which one of the following concepts explains why heavy nuclei do not follow the line? a) Pauli exclusion principle b) transmutation c) Coulomb’s repulsion d) Heisenberg uncertainty principle e) particle-wave duality Click Here For The Concept SOLUTION: Answer: c) The reasons for the heavy nuclei having more neutrons
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QUESTION: The location of a particle is measured with an uncertainty of . a) What will be the resulting minimum uncertainty in the particle’s momentum? b) If the mass of the particle is then what will be the minimum uncertainty in the velocity measurement? Click Here For The Concept SOLUTION: Let’s suppose: is the mass
Conceptual Question on Heisenberg Uncertainty Principle. #1 Read More »
The uncertainty principle is one of the most famous aspects of quantum mechanics. This idea was proposed by a German physicist, Werner Heisenberg, in 1927 and so it is also called as Heisenberg uncertainty principle. Heisenberg uncertainty principle is applicable to all matter waves. By using this principle, we can find the uncertainty of any
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A nucleus is made up of protons and neutrons. Initially, these particles were thought to be indivisible. Scientists did many experiments in past to know more about them. In 1960, one such experiment revealed that protons and neutrons contained three smaller particles, called quarks. Quarks come in six types or flavors, and a proton contains
Do protons contain intrinsic charm quarks too? Read More »
QUESTION: A vessel contains a mixture of nitrogen () and carbon dioxide () at a temperature and pressure . Find the density of this mixture, assuming the gases to be ideal. To solve this problem, you must have an idea of the ideal gas law. SOLUTION: Let: is the number of moles of the mixture,
I.E. Irodov: Question Number 2.4 Read More »
QUESTION: A vessel of volume contains a mixture of hydrogen and helium at a temperature and pressure . The mass of the mixture is equal to . Find the ratio of the mass of hydrogen to that of helium in the given mixture. To solve this problem, you must have an idea of the ideal
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QUESTION: Two identical vessels are connected by a tube with a valve letting the gas pass from one vessel into the other if the pressure difference . Initially, there was a vacuum in one vessel while the other contained ideal gas at a temperature and pressure . Then both vessels were heated to a temperature
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QUESTION: A vessel of volume contains ideal gas at the temperature . After a portion of the gas has been let out, the pressure in the vessel decreased by (the temperature remaining constant). Find the mass of the released gas. The gas density under the normal conditions . To solve this problem, you must have
I.E. Irodov: Question Number 2.1 Read More »
QUESTION: A motorboat going downstream overcame a raft at a point ; later it turned back and after some time passed the raft at a distance from the point A. Find the flow velocity assuming the duty of the engine to be constant. To solve this problem, you must have an idea of Kinematics. SOLUTION:
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