Question

what is an idea of the heisenberg uncertainty principle?
we can determine both the speed (momentum) and the position of the electron.
we can determine only the momentum or speed of the electron.
we can determine only the position of the electron.
we can determine either the speed (momentum) or the position of the electron, but not both.

Explanation:

The Heisenberg Uncertainty Principle, a key concept in quantum mechanics, states that it is impossible to simultaneously measure both the exact position and exact momentum (related to speed) of a subatomic particle like an electron with perfect precision; the more accurately one is measured, the less accurately the other can be known.

Answer:

D. We can determine either the speed (momentum) or the position of the electron, but not both.