The date the model was published.
The use of “laws” originated prior to science splitting from natural philosophy. There’s an implicit assumption that God as the creator laid down both moral and natural laws, with the theologian concerned with the former and the natural philosopher concerned with the latter.
“Theory” begins to take hold in the late 1700s and, very roughly speaking, is used to describe more complex models. “Law” eventually became nearly archaic, although still used to describe very pithy models (Amdahl’s Law, Gustafson’s Law).
The word “model” is gradually superseding both of them.
People have tried to come up with hard-and-fast rules to distinguish them, but scientists are unruly beasts, and use whatever language suits them in the moment.
Answer:
False
Explanation:
Vector has a magnitude and direction.
A scalar is just a magnitude or size.
Sure. But whether it's provable is another question. We used to think the Milky Way was the whole universe. Then we found lots of other galaxies. Finding other universes is a bit different though. In theory we can never get out of our universe to go there. Anywhere we can get go is, by definition, still our universe. In this way our universe is like a black hole. No matter how hard we try we can't escape. Not even light can escape which means we couldn't see other universes if we wanted to. Their light is trapped inside them, like a black hole. So it would never reach our universe, never reach our telescopes.
Because we don't have Ir we will die
Explanation:
The given data is as follows.
Temperature of metal = = (296 + 273) K
= 569 K
Density of the metal = 8.85 = (as )
Atomic mass = 51.40 g/mol
Vacancies =
Formula to calculate the number of atomic sites is as follows.
n =
=
=
Now, we will calculate the energy as follows.
E =
where, K =
E =
=
Therefore, we can conclude that energy (in eV/atom) for vacancy formation in given metal, M, is .