Significant figures (also known as significant digits or sig figs) are a way of expressing the precision of a measurement or a number. They are the meaningful digits in a measured or calculated value and are used to indicate the degree of certainty in the measurement. Significant figures are important in scientific and engineering calculations […]
Significant Figures Read More »
QUESTION: The unified atomic mass unit, denoted by u, is defined to be . It can be used as an approximation for the average mass of a nucleon in a nucleus, taking the binding energy into account. Find the energy obtained after converting a nucleus of 14 nucleons completely into free energy. Click Here For
Conceptual Question on Mass-Energy Equivalence. #4 Read More »
QUESTION: A free neutron can decay into a proton, an electron, and an anti-neutrino. Assume the anti-neutrino’s rest mass is zero, and the rest masses for proton and electron are and respectively. Determine the total kinetic energy shared among the three particles when a neutron decays at rest. Click Here For The Concept SOLUTION: Given:
Conceptual Question on Mass-Energy Equivalence. #3 Read More »
QUESTION: The isotope decays via decay. The measured atomic mass of is , and the atomic mass of the daughter nucleus is . Find the Name of the daughter nucleus. the number of nucleons in the daughter nucleus. the atomic number of the daughter nucleus. the number of neutrons in the daughter nucleus. the kinetic energy of
Conceptual Question on Mass-Energy Equivalence. #2 Read More »
QUESTION: What is the energy released in the nuclear fusion reaction ? Click Here For The Concept SOLUTION: Given: A nuclear reaction; To find: The energy released in the given fusion reaction. We know the values: The unified atomic mass, Mass of The mass of The mass defect of the given nuclear reaction is calculated
Conceptual Question on Mass-Energy Equivalence. #1 Read More »
Let’s understand it by an example. Suppose you have a little glass ball of weight. Let’s convert this completely into its energy contains. By using the formula , you get almost , the same amount of energy as is released in the explosion of a 125,000-ton hydrogen bomb. But is it possible to release this
Can we convert matter completely into energy? Read More »
You always noticed that in the world where you are living things tend to move around a lot and this fascinates us to study the science of motion. Motion is the phenomenon in which a body changes its position over time. Mathematically, you can describe the motion of a body in terms of distance, displacement,
Distance, Displacement, Average Speed, And Average Velocity Read More »
QUESTION: Suppose the speed of electrons present in the first shell of an atom is 50% of the speed of light. If the uncertainty in velocity is , what is the uncertainty in the position of this electron? Click Here For The Concept SOLUTION: Let’s suppose: is the mass of the electron, and is the
Conceptual Question on Heisenberg Uncertainty Principle. #5 Read More »
QUESTION: a) If an electron’s position can be measured to a precision of , what will be the uncertainty in its momentum? b) If its momentum is equal to its uncertainty then what will be the electron’s wavelength? Click Here For The Concept SOLUTION: Let’s suppose: is the mass of the electron, is the uncertainty
Conceptual Question on Heisenberg Uncertainty Principle. #4 Read More »
QUESTION: A particle’s energy is measured with an uncertainty of . What will be the smallest possible uncertainty in our knowledge of when the particle had the given uncertainty of energy? Click Here For The Concept SOLUTION: Let’s suppose: is the uncertainty in energy, and is the uncertainty in time. Given: To find: We know
Conceptual Question on Heisenberg Uncertainty Principle. #3 Read More »
