How is chemistry used in astrophysics? Define a physical change. What is quantum mechanics used for? What is weight in physical science? What is the main focus of physical science? What is energy made of in quantum physics? What is conserved in physical changes?
What is conserved in physical changes? How is the kinetic energy of the particles of a substance affected during a phase change? How is energy transferred during convection? Is heat a substance or a form of energy? Does internal energy change in an adiabatic process?
How is matter different from mass? These and other questions about the deepest levels of physics, answered inside.
at least in physics. Matter is not conserved, while mass is conserved in closed systems. According to the theory of special relativity, matter in a closed system may disappear. Mass, on the other hand, may never have been created nor destroyed, although it can be converted...
Just like objects in space orbit around planets or stars, the dust and gas that is being accreted into a protostar orbit around the protostar. This orbit gives the dust and gas angular momentum. Importantly, angular momentum is conserved just like linear momentum. This means that as the gas ...
Properties derived from symmetries go conserved within objects, themselves being propagated through space and time. Because entanglement can be shown to exist with local physics, the fact that Bell’s inequalities are broken cannot prove nonlocality per se. Statistical mutual dependence is a notion ...
How is energy converted from potential to kinetic (and vice versa) when objects move inup/down, back/forth harmonic motion?How is energy conserved? What does this really mean?How does friction belong in any conversations about energy?How do power, work, time, applied force relate to ...
The standard textbook result ${\\bf F=abla(\\bmu\\cdot B)}$ is correct even in the presence of time dependent electromagnetic fields. Using this expression for the force, overall momentum (the sum of mechanical and electromagnetic momentum) is conserved in changing electromagnetic fields....
Ohanian, "What is spin?," Am. J. Phys. /54/, 500--505 (1985). Inparticular, it is confirmed that "spin" is a classical quantity which can becalculated for any field using its definition, namely that it is just thenon-local part of the conserved angular momentum. This leads to ...
When a radioactive atom loses its extra energy by decaying, that energy has to go somewhere -- energy in the universe is never created or destroyed, it is said to be always conserved. Uses of Radioactive Substances Lesson Summary Register to view this lesson Are you a student or a ...