In superstring theory the fundamental objects from which all forces and matter are built are:
a. Planck lengths.
b. gravitons.
c. gluons whose size of about 10^-25 m is the smallest distances in nature.
d. loops of material that cannot be further subdivided, whose size of about 10^-35 m is the smallest distance in nature.
e. quarks whose size of about 10^-25 m is the smallest distance in nature.
d
You might also like to view...
The gravitational force in a molecular cloud depends on
A) density only. B) temperature only. C) density and temperature. D) composition. E) thermal pressure.
Give three examples of the equilibrium rule that are not cited in the textbook
Fill in the blank with correct word.
Both RR Lyrae and Cepheid variables are giants that ________ in size over time
Fill in the blank(s) with correct word
A particle (m = 20 mg, q = ?5.0 ?C) moves in a uniform electric field of 60 N/C in the positive x direction. At t = 0, the particle is moving 25 m/s in the positive x direction and is passing through the origin. How far is the particle from the origin at t = 2.0 s?
a. 80 m b. 20 m c. 58 m d. 10 m e. 30 m