Question

What is Planck's constant?

Answer 1

Planck's constant is `h~~6.63*10^-34 \ "J"*"s"`.

Explanation:

Planck's constant, in science, is denoted by `h`, and is given the value of

`h~~6.63*10^-34 \ "J"*"s"`

Note that `1 \ "J"=1 \ "N"*"m"`

`=1 \ "kg"*"m/s"^2*"m"`

`=1 \ "kg"*"m"^2"/s"^2`

And so, we can rewrite `h` as

`h~~6.63*10^-34 \ "kg"*"m"^2"/s"^2*"s"`

`=6.63*10^-34 \ "kg"*"m"^2*"s"^-1`

This is one of the smallest constants in physics, and gives the relationship between a photon's energy and its frequency.

Source: https://en.wikipedia.org/wiki/Planck_constant