In brane-world theory, there are extra
A) strings.
B) gluons.
C) monopoles.
D) dimensions.
E) leptons.

Question

Quizplus · Accepted Answer

In brane-world theory, it is postulated that there are extra dimensions beyond the three that we can observe. These dimensions are theorized to exist as "branes" or membranes that are parallel to our own universe. This theory explains why gravity is so much weaker than the other fundamental forces, as it is hypothesized that it exists in the extra dimensions and only appears weak because it is diffused across all of them.

In Brane-World Theory, There Are Extra